Company lists · Data refreshed September 2026

Top 25 Enterprise sales outsourcing companies based in the United States

Name: Enterprise sales outsourcing companies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 2,610 companies tracked

RevenueBase identified 2,610 enterprise sales outsourcing companies headquartered in the United States as of September 2026 and tracks 66,182 professional contacts across them, including 9,444 with verified work emails. New York is the largest hub.

This list covers enterprise sales outsourcing companies headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 28, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 28, 2026 86% judged on-target in blind review

2,610Companies

66,182Contacts tracked

9,444Verified emails

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The 25 largest enterprise sales outsourcing companies based in the United States

Ranked by team size

Top 25 of 2,610 enterprise sales outsourcing companies based in the United States, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to enterprise sales outsourcing companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	CGS Computer Generated Solutions	Partial evidence	New York, NY, United StatesHQ checked Sep 28, 2026	5,001-10,000	4,608 contacts →
	Partial evidence “For over 40 years, CGS has enabled global enterprises, regional companies, and government agencies to drive breakthrough performance through business applications, enterprise…” Source: RevenueBase Database · checked Sep 28, 2026
2	Marketsource INC	Partial evidence	Alpharetta, GA, United StatesHQ checked Sep 28, 2026	5,001-10,000	3,063 contacts →
	Partial evidence “MarketSource, an Allegis Group company, is a sales acceleration company focused on delivering better outcomes for many of the world’s most iconic brands.” Source: RevenueBase Database · checked Sep 28, 2026
3	Advanced Call Center Technologies, LLC	Indirect evidence	Berwyn, PA, United StatesHQ checked Sep 28, 2026	5,001-10,000	2,774 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 28, 2026
4	Stream Global Services	Partial evidence	Eagan, MN, United StatesHQ checked Sep 28, 2026	10001+	2,772 contacts →
	Partial evidence “Stream Global Services is a premium business process outsource (BPO) service provider specializing in customer relationship management solutions including sales, customer care…” Source: RevenueBase Database · checked Sep 28, 2026
5	Marketstar	Strong evidence	Ogden, UT, United StatesHQ checked Sep 28, 2026	1,001-5,000	2,446 contacts →
	Strong evidence “MarketStar is a global B2B sales outsourcing leader with 38+ years of experience driving predictable revenue growth.” Source: RevenueBase Database · checked Sep 28, 2026
6	Enshored	Indirect evidence	Signal Hill, CA, United StatesHQ checked Sep 28, 2026	1,001-5,000	2,247 contacts →
	Indirect evidence “Enshored powers the growth of ambitious high growth companies by delivering and managing teams of elite outsourcers.” Source: RevenueBase Database · checked Sep 28, 2026
7	Support Services Group	Indirect evidence	Waco, TX, United StatesHQ checked Sep 28, 2026	5,001-10,000	1,710 contacts →
	Indirect evidence “Support Services Group (SSG) helps businesses accelerate growth and earn customers for life through high-touch, outsourced engagement center services.” Source: RevenueBase Database · checked Sep 28, 2026
8	RDI Corporation	Indirect evidence	Cincinnati, OH, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,484 contacts →
	Indirect evidence “At RDI, we believe in winning smart by providing customized, strategic solutions to our clients.” Source: RevenueBase Database · checked Sep 28, 2026
9	Full Potential Solutions	Partial evidence	Waltham, MA, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,238 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 28, 2026
10	Inktel Contact Center Solutions	Indirect evidence	Doral, FL, United StatesHQ checked Sep 28, 2026	1,001-5,000	902 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 28, 2026
11	Horatio	Partial evidence	New York, United StatesHQ checked Sep 28, 2026	1,001-5,000	860 contacts →
	Partial evidence “Horatio is a premier, tech-enabled outsourcing partner helping ambitious companies scale customer experience and complex business operations without compromising quality…” Source: RevenueBase Database · checked Sep 28, 2026
12	Memoryblue	Indirect evidence	Tysons, VA, United StatesHQ checked Sep 28, 2026	501-1,000	825 contacts →
	Indirect evidence “memoryBlue is the go-to partner for revenue leaders in B2B Tech looking to grow their pipeline engine.” Source: RevenueBase Database · checked Sep 28, 2026
13	Buchanan Technologies	Partial evidence	Grapevine, TX, United StatesHQ checked Sep 28, 2026	501-1,000	818 contacts →
	Partial evidence “As a leading IT consulting and outsourcing services firm, Buchanan Technologies helps organizations across North America turn their business technology into a powerful competitive…” Source: RevenueBase Database · checked Sep 28, 2026
14	Abstrakt Marketing Group	Indirect evidence	St Louis, MO, United StatesHQ checked Sep 28, 2026	501-1,000	724 contacts →
	Indirect evidence “We book the qualified meetings that fill your pipeline for any B2B company ready to grow.” Source: RevenueBase Database · checked Sep 28, 2026
15	Salebuild	Indirect evidence	Redwood City, CA, United StatesHQ checked Sep 28, 2026	n/a	708 contacts →
	Indirect evidence “Salesify, a leading provider of B2B demand generation services, helps our clients create pipeline and accelerate revenue by identifying, profiling, nurturing and connecting with…” Source: RevenueBase Database · checked Sep 28, 2026
16	Movingdneedle Pvt. LTD	Partial evidence	Sterling Heights, MI, United StatesHQ checked Sep 28, 2026	51-200	528 contacts →
	Partial evidence “movingDneedle is a Business to Business Sales Lead Generation Company that provides fast and scalable, sales qualified leads through its unique Personalized Email Marketing…” Source: RevenueBase Database · checked Sep 28, 2026
17	The Pipeline Group	Indirect evidence	San Jose, CA, United StatesHQ checked Sep 28, 2026	201-500	523 contacts →
	Indirect evidence “The Pipeline Group helps B2B tech companies scale pipeline fast through our SDR-as-a-Service model.” Source: RevenueBase Database · checked Sep 28, 2026
18	Callbox INC	Partial evidence	Encino, CA, United StatesHQ checked Sep 28, 2026	201-500	499 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 28, 2026
19	Infoanalytica, INC	Strong evidence	San Jose, CA, United StatesHQ checked Sep 28, 2026	201-500	482 contacts →
	Strong evidence “InfoAnalytica is a B2B sales acceleration partner for mid-market and enterprise companies.” Source: RevenueBase Database · checked Sep 28, 2026
20	Saleshive	Indirect evidence	Denver, CO, United StatesHQ checked Sep 28, 2026	51-200	455 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026
21	Alliance Pdms	Indirect evidence	Hurst, TX, United StatesHQ checked Sep 28, 2026	51-200	428 contacts →
	Indirect evidence “Alliance is a domestically operated, internationally recognized professional contact center specializing in lead generation and appointment setting.” Source: RevenueBase Database · checked Sep 28, 2026
22	The Functionary	Indirect evidence	Aubrey, TX, United StatesHQ checked Sep 28, 2026	1,001-5,000	415 contacts →
	Indirect evidence “The Functionary helps companies scale operations around the reality of their business, not a standard model.” Source: RevenueBase Database · checked Sep 28, 2026
23	Touchstone Communications	Indirect evidence	Fort Worth, TX, United StatesHQ checked Sep 28, 2026	501-1,000	393 contacts →
	Indirect evidence “Touchstone Communications was built in 2002 on the philosophy of hiring educated, motivated talent and then providing them with the best training and management to achieve our…” Source: RevenueBase Database · checked Sep 28, 2026
24	Vertex Group	Indirect evidence	Olean, NY, United StatesHQ checked Sep 28, 2026	501-1,000	383 contacts →
	Indirect evidence “Vertex Global Services is one of the leading Business Optimization Solutions provider globally- Ranked 19th amongst 50 most innovative companies across the globe.” Source: RevenueBase Database · checked Sep 28, 2026
25	EBQ	Partial evidence	Austin, TX, United StatesHQ checked Sep 28, 2026	201-500	377 contacts →
	Partial evidence “EBQ is an outsourced sales and marketing organization that provides services to help companies scale.” Source: RevenueBase Database · checked Sep 28, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: enterprise sales outsourcing companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names enterprise sales outsourcing companies.
Partial evidence: Its own public description names part of enterprise sales outsourcing companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name enterprise sales outsourcing companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 2,610 enterprise sales outsourcing companies based in the United States

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Enterprise sales outsourcing companies based in the United States at a glance

As of Sep 28, 2026

14.3%Verified-email coverage

25.4Average contacts per company

11-50Median size (employees)

4.9%Largest-city concentration · New York

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

1,207

11-50

891

51-200

338

201-500

101

501-1,000

1,001-5,000

5,001-10,000

10001+

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 2,610 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among enterprise sales outsourcing companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “enterprise sales outsourcing companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names enterprise sales outsourcing companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among enterprise sales outsourcing companies, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 9,444 across the full list. 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 28, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Enterprise sales outsourcing companies by metro

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names enterprise sales outsourcing companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many enterprise sales outsourcing companies are there based in the United States?

RevenueBase identified 2,610 enterprise sales outsourcing companies headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

CGS Computer Generated Solutions, headquartered in New York, tops this list with the largest team on record.

Which city has the most enterprise sales outsourcing companies?

New York leads with 129 headquartered companies, followed by Austin (64) and Miami (63).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 9,444 verified decision-maker contacts tracked across these 2,610 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 28, 2026.

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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 Smart Search, 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.