Company lists · Data refreshed September 2026
Top 25 Inside sales outsourcing companies based in the United States
RevenueBase identified 2,210 company matches for inside sales outsourcing companies associated with the United States as of September 2026 and tracks 62,063 professional contacts across them, including 8,226 with verified work emails. New York is the largest hub.
This list covers company matches for inside sales outsourcing companies associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 21, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest inside sales outsourcing companies based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 2,774 contacts → | ||||
Exact match “Advanced Call Center Technologies, LLC (ACT) is a premier provider of domestic (USA), near shore and far shore outsourced call center services to the financial services, mortgage…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 2 | 2,772 contacts → | ||||
Exact match “Stream Global Services is a premium business process outsource (BPO) service provider specializing in customer relationship management solutions including sales, customer care…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 3 | 2,446 contacts → | ||||
Exact match “MarketStar is a global B2B sales outsourcing leader with 38+ years of experience driving predictable revenue growth.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 4 | 1,711 contacts → | ||||
Exact match “SupportNinja provides customer experience and back-office support services for tech companies and startups around the world.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 5 | 1,238 contacts → | ||||
Exact match “Full Potential Solutions (FPS) is a new kind of performance-based outsourcing firm that puts culture and employees first, because we believe that happy, fulfilled teams accomplish…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 6 | 1,238 contacts → | ||||
Exact match “We are a boutique outsourcing firm specializing in keeping our customers' databases up-to-date, accurate, and as robust as possible.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 7 | 1,068 contacts → | ||||
Exact match “CIENCE Technologies, Inc, founded in 2015 and headquartered in Denver, CO, is a pioneering global company in lead generation software and services, committed to transforming the…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 8 | 972 contacts → | ||||
Exact match “Transparent BPO was founded to provide its clients with superior nearshore contact center services and business process outsourcing at competitive pricing.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 9 | 902 contacts → | ||||
Exact match “Our Company Inktel is a leading business process outsourcer that specializes in creating personalized call center solutions which enable our clients to increase market share…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 10 | 883 contacts → | ||||
Exact match “If you are interested in growing your business or increasing efficiency, AnswerNet has the expertise, technology, and people to help you take your company to new heights!” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 11 | 860 contacts → | ||||
Exact match “Horatio is a premier, tech-enabled outsourcing partner helping ambitious companies scale customer experience and complex business operations without compromising quality…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 12 | 825 contacts → | ||||
Exact match “memoryBlue is the go-to partner for revenue leaders in B2B Tech looking to grow their pipeline engine.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 13 | 776 contacts → | ||||
Exact match “Salelytics is now MarketSource.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 14 | 758 contacts → | ||||
Exact match “Sequential Tech is the trusted outsource partner of wireline/wireless telecommunication, broadband, cable/MSO, and satellite service providers.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 15 | 724 contacts → | ||||
Exact match “We book the qualified meetings that fill your pipeline for any B2B company ready to grow.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 16 | 708 contacts → | ||||
Exact match “Salesify, a leading provider of B2B demand generation services, helps our clients create pipeline and accelerate revenue by identifying, profiling, nurturing and connecting with…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 17 | 697 contacts → | ||||
Exact match “Flexisales, is a global frontrunner in B2B Lead & Demand Generation and Data Services, serving technology companies & agencies worldwide.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 18 | 609 contacts → | ||||
Exact match “Infinity is an award-winning inside sales agency and consulting firm with 30 years of experience helping B2B companies maximize sales and drive revenue.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 19 | 562 contacts → | ||||
Exact match “teleNetwork is a leading provider of outsourced customer service, technical support, and sales enablement solutions for technology products and services.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 20 | 528 contacts → | ||||
Exact match “movingDneedle is a Business to Business Sales Lead Generation Company that provides fast and scalable, sales qualified leads through its unique Personalized Email Marketing…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 21 | 499 contacts → | ||||
Exact match “Callbox is the #1 trusted lead generation services and AI-Powered Growth Strategy Partner by enterprise and scaling businesses in the USA, Canada, Asia Pacific, Latin America…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 22 | 482 contacts → | ||||
Exact match “InfoAnalytica is a B2B sales acceleration partner for mid-market and enterprise companies.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 23 | 478 contacts → | ||||
Exact match “About DemandShore Since 2004, we’ve been working hard to deliver value to Sales & Marketing professionals across B2B Technology companies globally.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 24 | 455 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 25 | 454 contacts → | ||||
Exact match “SupportZebra is a business process outsourcing company based in the Philippines, with headquarters in the Houston,TX region, that specializes in: Sales & Marketing Retention |…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “inside sales outsourcing companies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 2,210 inside sales outsourcing companies based in the United States
See the full list, filter by size, metro and specialty, and access 8,226 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Inside sales outsourcing companies based in the United States at a glance
As of Sep 21, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 2,210 companies.
How this list was built
The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Company records associated with the United States whose business descriptions match “inside sales outsourcing companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
- RevenueBase SmartSearch
- Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
- Public preview
- The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
- Match quality
- RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every displayed company carries at least one verified work email. RevenueBase tracks 8,226 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 21, 2026. Lists refresh periodically as the graph is re-checked.
- Record context
- Company records and descriptions can change. Check the company's website for its current services and locations.
Inside sales outsourcing companies by metro
- Inside sales outsourcing companies in New York123
- Inside sales outsourcing companies in Miami62
- Inside sales outsourcing companies in Sheridan62
- Inside sales outsourcing companies in Los Angeles59
- Inside sales outsourcing companies in Austin58
- Inside sales outsourcing companies in San Francisco51
- Inside sales outsourcing companies in Houston46
- Inside sales outsourcing companies in San Diego32
- Inside sales outsourcing companies in Atlanta29
- Inside sales outsourcing companies in Denver25
Frequently asked
What is RevenueBase SmartSearch?
RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “inside sales outsourcing companies”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many inside sales outsourcing companies are there based in the United States?
RevenueBase identified 2,210 company matches for inside sales outsourcing companies associated with the United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.
What is the largest company on this list?
Advanced Call Center Technologies, LLC tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most inside sales outsourcing companies?
New York leads with 123 company records, followed by Miami (62) and Sheridan (62).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 8,226 professional contacts with verified work emails tracked across these 2,210 companies; direct dials are available where recorded.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 21, 2026.
Ready to reach these companies? Verified emails and direct dials for all 2,210 inside sales outsourcing companies based in the United States. Start with a free account, no credit card.
Download this list →Related lists
Inside sales outsourcing companies by geography
- Inside sales outsourcing companies based in Bangalore, India
- Inside sales outsourcing companies based in New Delhi, India
- Inside sales outsourcing companies based in Noida, India
- Inside sales outsourcing companies based in Pune, India
- Inside sales outsourcing companies based in Atlanta, United States
- Inside sales outsourcing companies based in Austin, United States
- Inside sales outsourcing companies based in Denver, United States
- Inside sales outsourcing companies based in Houston, United States
- Inside sales outsourcing companies based in Los Angeles, United States
- Inside sales outsourcing companies based in Miami, United States
- Inside sales outsourcing companies based in New York, United States
- Inside sales outsourcing companies based in San Diego, United States
About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
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- Inside sales outsourcing companies based in Bangalore, India
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- Inside sales outsourcing companies based in Noida, India
- Inside sales outsourcing companies based in Pune, India
- Inside sales outsourcing companies based in Atlanta, United States
- Inside sales outsourcing companies based in Austin, United States
Company intelligence · public preview
Top 25 inside sales outsourcing companies based in the United States
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 2,210 matching company records for inside sales outsourcing companies based in the United States, with 62,063 tracked contacts and 8,226 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 21, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 inside sales outsourcing companies based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  Advanced Call Center Technologies, LLCacttoday.comHQ: Berwyn, PA, United StatesReported employees: 5,001-10,000 | Berwyn, PA, United States | 5,001-10,000 | Exact match | 2,774 contacts → |
“Advanced Call Center Technologies, LLC (ACT) is a premier provider of domestic (USA), near shore and far shore outsourced call center services to the financial services, mortgage…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Stream Global Servicesstream.comHQ: Eagan, MN, United StatesReported employees: 10001+ | Eagan, MN, United States | 10001+ | Exact match | 2,772 contacts → |
“Stream Global Services is a premium business process outsource (BPO) service provider specializing in customer relationship management solutions including sales, customer care…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Marketstarmarketstar.comHQ: Ogden, UT, United StatesReported employees: 1,001-5,000 | Ogden, UT, United States | 1,001-5,000 | Exact match | 2,446 contacts → |
“MarketStar is a global B2B sales outsourcing leader with 38+ years of experience driving predictable revenue growth.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Supportninjasupportninja.comHQ: Austin, TX, United StatesReported employees: 1,001-5,000 | Austin, TX, United States | 1,001-5,000 | Exact match | 1,711 contacts → |
“SupportNinja provides customer experience and back-office support services for tech companies and startups around the world.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Full Potential Solutionsfpsinc.comHQ: Waltham, MA, United StatesReported employees: 1,001-5,000 | Waltham, MA, United States | 1,001-5,000 | Exact match | 1,238 contacts → |
“Full Potential Solutions (FPS) is a new kind of performance-based outsourcing firm that puts culture and employees first, because we believe that happy, fulfilled teams accomplish…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Information Evolution, INCinformationevolution.comHQ: Austin, TX, United StatesReported employees: 501-1,000 | Austin, TX, United States | 501-1,000 | Exact match | 1,238 contacts → |
“We are a boutique outsourcing firm specializing in keeping our customers' databases up-to-date, accurate, and as robust as possible.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Ciencecience.comHQ: Miami, FL, United StatesReported employees: 201-500 | Miami, FL, United States | 201-500 | Exact match | 1,068 contacts → |
“CIENCE Technologies, Inc, founded in 2015 and headquartered in Denver, CO, is a pioneering global company in lead generation software and services, committed to transforming the…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Transparent BPOtransparentbpo.comHQ: Rockville, MD, United StatesReported employees: 1,001-5,000 | Rockville, MD, United States | 1,001-5,000 | Exact match | 972 contacts → |
“Transparent BPO was founded to provide its clients with superior nearshore contact center services and business process outsourcing at competitive pricing.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Inktel Contact Center Solutionsinktel.comHQ: Doral, FL, United StatesReported employees: 1,001-5,000 | Doral, FL, United States | 1,001-5,000 | Exact match | 902 contacts → |
“Our Company Inktel is a leading business process outsourcer that specializes in creating personalized call center solutions which enable our clients to increase market share…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Answernetanswernet.comHQ: Horsham, PA, United StatesReported employees: 501-1,000 | Horsham, PA, United States | 501-1,000 | Exact match | 883 contacts → |
“If you are interested in growing your business or increasing efficiency, AnswerNet has the expertise, technology, and people to help you take your company to new heights!” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Horatiohirehoratio.comHQ: New York, United StatesReported employees: 1,001-5,000 | New York, United States | 1,001-5,000 | Exact match | 860 contacts → |
“Horatio is a premier, tech-enabled outsourcing partner helping ambitious companies scale customer experience and complex business operations without compromising quality…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Memorybluememoryblue.comHQ: Tysons, VA, United StatesReported employees: 501-1,000 | Tysons, VA, United States | 501-1,000 | Exact match | 825 contacts → |
“memoryBlue is the go-to partner for revenue leaders in B2B Tech looking to grow their pipeline engine.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Salelyticsmarketsource.comHQ: Appleton, WI, United StatesReported employees: 1,001-5,000 | Appleton, WI, United States | 1,001-5,000 | Exact match | 776 contacts → |
“Salelytics is now MarketSource.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Sequential Technology Internationalsequentialtech.comHQ: Bethlehem, United StatesReported employees: 1,001-5,000 | Bethlehem, United States | 1,001-5,000 | Exact match | 758 contacts → |
“Sequential Tech is the trusted outsource partner of wireline/wireless telecommunication, broadband, cable/MSO, and satellite service providers.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Abstrakt Marketing Groupabstraktmg.comHQ: St. Louis, MO, United StatesReported employees: 501-1,000 | St. Louis, MO, United States | 501-1,000 | Exact match | 724 contacts → |
“We book the qualified meetings that fill your pipeline for any B2B company ready to grow.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Salebuildsalesify.comHQ: Redwood City, CA, United StatesReported employees: Not recorded | Redwood City, CA, United States | Not recorded | Exact match | 708 contacts → |
“Salesify, a leading provider of B2B demand generation services, helps our clients create pipeline and accelerate revenue by identifying, profiling, nurturing and connecting with…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Flexisales INCflexisales.comHQ: Las Vegas, NV, United StatesReported employees: 201-500 | Las Vegas, NV, United States | 201-500 | Exact match | 697 contacts → |
“Flexisales, is a global frontrunner in B2B Lead & Demand Generation and Data Services, serving technology companies & agencies worldwide.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Infinityinfinitydelivers.comHQ: Cedar Rapids, IA, United StatesReported employees: 501-1,000 | Cedar Rapids, IA, United States | 501-1,000 | Exact match | 609 contacts → |
“Infinity is an award-winning inside sales agency and consulting firm with 30 years of experience helping B2B companies maximize sales and drive revenue.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Telenetworktelenetwork.comHQ: San Marcos, TX, United StatesReported employees: 1,001-5,000 | San Marcos, TX, United States | 1,001-5,000 | Exact match | 562 contacts → |
“teleNetwork is a leading provider of outsourced customer service, technical support, and sales enablement solutions for technology products and services.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Movingdneedle Pvt. LTDmovingdneedle.comHQ: Sterling Heights, MI, United StatesReported employees: 51-200 | Sterling Heights, MI, United States | 51-200 | Exact match | 528 contacts → |
“movingDneedle is a Business to Business Sales Lead Generation Company that provides fast and scalable, sales qualified leads through its unique Personalized Email Marketing…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Callbox INCcallboxus.comHQ: Encino, CA, United StatesReported employees: 201-500 | Encino, CA, United States | 201-500 | Exact match | 499 contacts → |
“Callbox is the #1 trusted lead generation services and AI-Powered Growth Strategy Partner by enterprise and scaling businesses in the USA, Canada, Asia Pacific, Latin America…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Infoanalytica, INCinfoanalytica.comHQ: San Jose, CA, United StatesReported employees: 201-500 | San Jose, CA, United States | 201-500 | Exact match | 482 contacts → |
“InfoAnalytica is a B2B sales acceleration partner for mid-market and enterprise companies.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Demandshoredemandshore.comHQ: San Francisco, CA, United StatesReported employees: 501-1,000 | San Francisco, CA, United States | 501-1,000 | Exact match | 478 contacts → |
“About DemandShore Since 2004, we’ve been working hard to deliver value to Sales & Marketing professionals across B2B Technology companies globally.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Saleshivesaleshive.comHQ: Denver, CO, United StatesReported employees: 51-200 | Denver, CO, United States | 51-200 | Exact match | 455 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 25 |  Supportzebrasupportzebra.comHQ: Houston, TX, United StatesReported employees: 1,001-5,000 | Houston, TX, United States | 1,001-5,000 | Exact match | 454 contacts → |
“SupportZebra is a business process outsourcing company based in the Philippines, with headquarters in the Houston,TX region, that specializes in: Sales & Marketing Retention |…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 2,210 company matches
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Inside sales outsourcing companies: dataset insights
September 21, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
2,208 records in the displayed employee bands.
2 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 2,210 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 21, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Inside sales outsourcing companies by metro
- Inside sales outsourcing companies in New York123
- Inside sales outsourcing companies in Miami62
- Inside sales outsourcing companies in Sheridan62
- Inside sales outsourcing companies in Los Angeles59
- Inside sales outsourcing companies in Austin58
- Inside sales outsourcing companies in San Francisco51
- Inside sales outsourcing companies in Houston46
- Inside sales outsourcing companies in San Diego32
- Inside sales outsourcing companies in Atlanta29
- Inside sales outsourcing companies in Denver25
Questions about this company list
What does Exact match mean for inside sales outsourcing companies?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many inside sales outsourcing companies did RevenueBase find based in the United States?
The saved snapshot records 2,210 matching company records, 62,063 tracked contacts and 8,226 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 21, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Inside sales outsourcing companies by geography
- Inside sales outsourcing companies based in Bangalore, India
- Inside sales outsourcing companies based in New Delhi, India
- Inside sales outsourcing companies based in Noida, India
- Inside sales outsourcing companies based in Pune, India
- Inside sales outsourcing companies based in Atlanta, United States
- Inside sales outsourcing companies based in Austin, United States
- Inside sales outsourcing companies based in Denver, United States
- Inside sales outsourcing companies based in Houston, United States
- Inside sales outsourcing companies based in Los Angeles, United States
- Inside sales outsourcing companies based in Miami, United States
- Inside sales outsourcing companies based in New York, United States
- Inside sales outsourcing companies based in San Diego, United States
Cite this list
RevenueBase Data Team. Top 25 inside sales outsourcing companies based in the United States. Snapshot: September 21, 2026. https://revenuebase.ai/companies/inside-sales-outsourcing-companies/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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- Inside sales outsourcing companies based in Bangalore, India
- Inside sales outsourcing companies based in New Delhi, India
- Inside sales outsourcing companies based in Noida, India
- Inside sales outsourcing companies based in Pune, India
- Inside sales outsourcing companies based in Atlanta, United States
- Inside sales outsourcing companies based in Austin, United States
Company intelligence · public preview
Top 25 inside sales outsourcing companies based in the United States
RevenueBase records 2,210 matching company records for inside sales outsourcing companies based in the United States, with 62,063 tracked contacts and 8,226 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 21, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 inside sales outsourcing companies based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Advanced Call Center Technologies, LLCacttoday.com HQ: Berwyn, PA, United StatesReported employees: 5,001-10,000 | Berwyn, PA, United States | 5,001-10,000 | Exact match | 2,774 contacts → |
“Advanced Call Center Technologies, LLC (ACT) is a premier provider of domestic (USA), near shore and far shore outsourced call center services to the financial services, mortgage…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Stream Global Servicesstream.com HQ: Eagan, MN, United StatesReported employees: 10001+ | Eagan, MN, United States | 10001+ | Exact match | 2,772 contacts → |
“Stream Global Services is a premium business process outsource (BPO) service provider specializing in customer relationship management solutions including sales, customer care…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Marketstarmarketstar.com HQ: Ogden, UT, United StatesReported employees: 1,001-5,000 | Ogden, UT, United States | 1,001-5,000 | Exact match | 2,446 contacts → |
“MarketStar is a global B2B sales outsourcing leader with 38+ years of experience driving predictable revenue growth.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Supportninjasupportninja.com HQ: Austin, TX, United StatesReported employees: 1,001-5,000 | Austin, TX, United States | 1,001-5,000 | Exact match | 1,711 contacts → |
“SupportNinja provides customer experience and back-office support services for tech companies and startups around the world.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Full Potential Solutionsfpsinc.com HQ: Waltham, MA, United StatesReported employees: 1,001-5,000 | Waltham, MA, United States | 1,001-5,000 | Exact match | 1,238 contacts → |
“Full Potential Solutions (FPS) is a new kind of performance-based outsourcing firm that puts culture and employees first, because we believe that happy, fulfilled teams accomplish…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Information Evolution, INCinformationevolution.com HQ: Austin, TX, United StatesReported employees: 501-1,000 | Austin, TX, United States | 501-1,000 | Exact match | 1,238 contacts → |
“We are a boutique outsourcing firm specializing in keeping our customers' databases up-to-date, accurate, and as robust as possible.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Ciencecience.com HQ: Miami, FL, United StatesReported employees: 201-500 | Miami, FL, United States | 201-500 | Exact match | 1,068 contacts → |
“CIENCE Technologies, Inc, founded in 2015 and headquartered in Denver, CO, is a pioneering global company in lead generation software and services, committed to transforming the…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Transparent BPOtransparentbpo.com HQ: Rockville, MD, United StatesReported employees: 1,001-5,000 | Rockville, MD, United States | 1,001-5,000 | Exact match | 972 contacts → |
“Transparent BPO was founded to provide its clients with superior nearshore contact center services and business process outsourcing at competitive pricing.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Inktel Contact Center Solutionsinktel.com HQ: Doral, FL, United StatesReported employees: 1,001-5,000 | Doral, FL, United States | 1,001-5,000 | Exact match | 902 contacts → |
“Our Company Inktel is a leading business process outsourcer that specializes in creating personalized call center solutions which enable our clients to increase market share…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Answernetanswernet.com HQ: Horsham, PA, United StatesReported employees: 501-1,000 | Horsham, PA, United States | 501-1,000 | Exact match | 883 contacts → |
“If you are interested in growing your business or increasing efficiency, AnswerNet has the expertise, technology, and people to help you take your company to new heights!” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Horatiohirehoratio.com HQ: New York, United StatesReported employees: 1,001-5,000 | New York, United States | 1,001-5,000 | Exact match | 860 contacts → |
“Horatio is a premier, tech-enabled outsourcing partner helping ambitious companies scale customer experience and complex business operations without compromising quality…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Memorybluememoryblue.com HQ: Tysons, VA, United StatesReported employees: 501-1,000 | Tysons, VA, United States | 501-1,000 | Exact match | 825 contacts → |
“memoryBlue is the go-to partner for revenue leaders in B2B Tech looking to grow their pipeline engine.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Salelyticsmarketsource.com HQ: Appleton, WI, United StatesReported employees: 1,001-5,000 | Appleton, WI, United States | 1,001-5,000 | Exact match | 776 contacts → |
“Salelytics is now MarketSource.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Sequential Technology Internationalsequentialtech.com HQ: Bethlehem, United StatesReported employees: 1,001-5,000 | Bethlehem, United States | 1,001-5,000 | Exact match | 758 contacts → |
“Sequential Tech is the trusted outsource partner of wireline/wireless telecommunication, broadband, cable/MSO, and satellite service providers.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Abstrakt Marketing Groupabstraktmg.com HQ: St. Louis, MO, United StatesReported employees: 501-1,000 | St. Louis, MO, United States | 501-1,000 | Exact match | 724 contacts → |
“We book the qualified meetings that fill your pipeline for any B2B company ready to grow.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Salebuildsalesify.com HQ: Redwood City, CA, United StatesReported employees: Not recorded | Redwood City, CA, United States | Not recorded | Exact match | 708 contacts → |
“Salesify, a leading provider of B2B demand generation services, helps our clients create pipeline and accelerate revenue by identifying, profiling, nurturing and connecting with…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Flexisales INCflexisales.com HQ: Las Vegas, NV, United StatesReported employees: 201-500 | Las Vegas, NV, United States | 201-500 | Exact match | 697 contacts → |
“Flexisales, is a global frontrunner in B2B Lead & Demand Generation and Data Services, serving technology companies & agencies worldwide.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Infinityinfinitydelivers.com HQ: Cedar Rapids, IA, United StatesReported employees: 501-1,000 | Cedar Rapids, IA, United States | 501-1,000 | Exact match | 609 contacts → |
“Infinity is an award-winning inside sales agency and consulting firm with 30 years of experience helping B2B companies maximize sales and drive revenue.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Telenetworktelenetwork.com HQ: San Marcos, TX, United StatesReported employees: 1,001-5,000 | San Marcos, TX, United States | 1,001-5,000 | Exact match | 562 contacts → |
“teleNetwork is a leading provider of outsourced customer service, technical support, and sales enablement solutions for technology products and services.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Movingdneedle Pvt. LTDmovingdneedle.com HQ: Sterling Heights, MI, United StatesReported employees: 51-200 | Sterling Heights, MI, United States | 51-200 | Exact match | 528 contacts → |
“movingDneedle is a Business to Business Sales Lead Generation Company that provides fast and scalable, sales qualified leads through its unique Personalized Email Marketing…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Callbox INCcallboxus.com HQ: Encino, CA, United StatesReported employees: 201-500 | Encino, CA, United States | 201-500 | Exact match | 499 contacts → |
“Callbox is the #1 trusted lead generation services and AI-Powered Growth Strategy Partner by enterprise and scaling businesses in the USA, Canada, Asia Pacific, Latin America…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Infoanalytica, INCinfoanalytica.com HQ: San Jose, CA, United StatesReported employees: 201-500 | San Jose, CA, United States | 201-500 | Exact match | 482 contacts → |
“InfoAnalytica is a B2B sales acceleration partner for mid-market and enterprise companies.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Demandshoredemandshore.com HQ: San Francisco, CA, United StatesReported employees: 501-1,000 | San Francisco, CA, United States | 501-1,000 | Exact match | 478 contacts → |
“About DemandShore Since 2004, we’ve been working hard to deliver value to Sales & Marketing professionals across B2B Technology companies globally.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Saleshivesaleshive.com HQ: Denver, CO, United StatesReported employees: 51-200 | Denver, CO, United States | 51-200 | Exact match | 455 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 25 | Supportzebrasupportzebra.com HQ: Houston, TX, United StatesReported employees: 1,001-5,000 | Houston, TX, United States | 1,001-5,000 | Exact match | 454 contacts → |
“SupportZebra is a business process outsourcing company based in the Philippines, with headquarters in the Houston,TX region, that specializes in: Sales & Marketing Retention |…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 2,210 company matches
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Inside sales outsourcing companies: dataset insights
September 21, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
2,208 records in the displayed employee bands.
2 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 2,210 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 21, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Inside sales outsourcing companies by metro
- Inside sales outsourcing companies in New York123
- Inside sales outsourcing companies in Miami62
- Inside sales outsourcing companies in Sheridan62
- Inside sales outsourcing companies in Los Angeles59
- Inside sales outsourcing companies in Austin58
- Inside sales outsourcing companies in San Francisco51
- Inside sales outsourcing companies in Houston46
- Inside sales outsourcing companies in San Diego32
- Inside sales outsourcing companies in Atlanta29
- Inside sales outsourcing companies in Denver25
Questions about this company list
What does Exact match mean for inside sales outsourcing companies?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many inside sales outsourcing companies did RevenueBase find based in the United States?
The saved snapshot records 2,210 matching company records, 62,063 tracked contacts and 8,226 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 21, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Inside sales outsourcing companies by geography
- Inside sales outsourcing companies based in Bangalore, India
- Inside sales outsourcing companies based in New Delhi, India
- Inside sales outsourcing companies based in Noida, India
- Inside sales outsourcing companies based in Pune, India
- Inside sales outsourcing companies based in Atlanta, United States
- Inside sales outsourcing companies based in Austin, United States
- Inside sales outsourcing companies based in Denver, United States
- Inside sales outsourcing companies based in Houston, United States
- Inside sales outsourcing companies based in Los Angeles, United States
- Inside sales outsourcing companies based in Miami, United States
- Inside sales outsourcing companies based in New York, United States
- Inside sales outsourcing companies based in San Diego, United States
Cite this list
RevenueBase Data Team. Top 25 inside sales outsourcing companies based in the United States. Snapshot: September 21, 2026. https://revenuebase.ai/companies/inside-sales-outsourcing-companies/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Inside sales outsourcing companies based in Bangalore, India
- Inside sales outsourcing companies based in New Delhi, India
- Inside sales outsourcing companies based in Noida, India
- Inside sales outsourcing companies based in Pune, India
- Inside sales outsourcing companies based in Atlanta, United States
- Inside sales outsourcing companies based in Austin, United States