Company lists · Data refreshed September 2026
Top 24 Open source contact management software companies based in the United States
RevenueBase identified 77 company matches for open source contact management software companies associated with the United States as of September 2026 and tracks 477 professional contacts across them, including 103 with verified work emails and 141 with mobile numbers. New York is the largest hub.
This list covers company matches for open source contact management software 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 5, 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 24 largest open source contact management software companies based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 67 contacts → | ||||
Exact match “Insightly, the new breed of CRM, helps modern businesses of all sizes build lifelong customer relationships and grow faster than ever before.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 2 | 32 contacts → | ||||
Exact match “CRMOne is a leading CRM platform that helps businesses to manage day-to-day business activities in one place.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 3 | 28 contacts → | ||||
Exact match “Less Annoying CRM is a simple CRM built from the ground up for small businesses.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 4 | 22 contacts → | ||||
Exact match “OnePageCRM is an ultra-simple yet powerful CRM system built for small businesses in the consulting and professional services industry.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 5 | 20 contacts → | ||||
Exact match “Claritysoft helps growing businesses manage customer relationships with ease.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 6 | 17 contacts → | ||||
Exact match “eWay-CRM is the best CRM for Microsoft Outlook.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 7 | 17 contacts → | ||||
Exact match “Avidian was founded in 2005 in the Seattle Metropolitan area by a diverse team of sales, business, and technical professionals, passionate about creating a user-friendly CRM.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 8 | 15 contacts → | ||||
Exact match “Are your leads falling through the cracks?” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 9 | 12 contacts → | ||||
Exact match “Mautic empowers businesses and organizations to deliver fully integrated marketing campaigns with a world-class open source marketing automation product, supported by a thriving…” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 10 | 11 contacts → | ||||
Exact match “SalesOptima is an online Customer Relationship Management (CRM) service that conveniently enables you to organize, manage, and nurture your customer contacts in the office or on…” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 11 | 10 contacts → | ||||
Exact match “Known as the most affordable and easy-to-use CRM for sales professionals and small businesses, LionDesk allows you to go from Lead to Close in a highly customizable platform.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 12 | 7 contacts → | ||||
Exact match “CRMBOOST provides tools and services to help businesses manage their prospective leads and clients, and help them use the internet to market their products and services…” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 13 | 6 contacts → | ||||
Exact match “Hey there!” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 14 | 5 contacts → | ||||
Exact match “AllClients provides simple contact management and marketing automation in one, easy-to-use system.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 15 | 5 contacts → | ||||
Exact match “At, our mission is to provide small business owners and entrepreneurs with a user friendly and all-inclusive platform that simplifies operations and helps them grow their brand.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 16 | 4 contacts → | ||||
Exact match “Dex is a personal CRM that helps you keep in touch, remember where you left off, and build stronger relationships.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 17 | 2 contacts → | ||||
Exact match “Brilliance CRM is a powerful cloud-based solution designed to streamline customer relationship management.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 18 | 2 contacts → | ||||
Exact match “Businesses and nonprofits often miss out on money making opportunities because they lack the resources to build stronger relationships with their contacts.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 19 | 2 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 20 | 2 contacts → | ||||
Exact match “Flectra is The Open Source ERP and CRM System For Your Business.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 21 | 2 contacts → | ||||
Exact match “CRM Pro Partners is dedicated to the successful implementation of Contact Relationship Management (CRM) software within a business.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 22 | 2 contacts → | ||||
Exact match “HaystackCRM is the premier CRM solution for small to medium businesses.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 23 | 1 contacts → | ||||
Exact match “The uncomplicated mobile sales CRM.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 24 | 1 contacts → | ||||
Exact match “Gold Coast Advisors develop contact management and Customer Relationship Management (CRM) solutions for all sizes of local, regional, and international businesses.” Recorded in the RevenueBase company graph · Sep 5, 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 “open source contact management software 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 24 of 77 open source contact management software companies based in the United States
See the full list, filter by size, metro and specialty, and access 103 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Open source contact management software companies based in the United States at a glance
As of Sep 5, 2026Companies by employee count
Freshness & accuracy
How recently the business emails on this list were verified
Email last verified
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 “open source contact management software 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 103 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 5, 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.
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 “open source contact management software companies”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many open source contact management software companies are there based in the United States?
RevenueBase identified 77 company matches for open source contact management software 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?
Insightly CRM By Unbounce tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most open source contact management software companies?
New York leads with 4 company records, followed by San Francisco (4) and Atlanta (2).
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 103 professional contacts with verified work emails tracked across these 77 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 5, 2026.
Ready to reach these companies? Verified emails and direct dials for all 77 open source contact management software companies based in the United States. Start with a free account, no credit card.
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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 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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Company intelligence · public preview
Top 24 open source contact management software 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 77 matching company records for open source contact management software companies based in the United States, with 477 tracked contacts and 103 verified work emails.
This public preview shows 24 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 5, 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 24 open source contact management software 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 |  Insightly CRM By Unbounceinsightly.comHQ: San Francisco, CA, United StatesReported employees: 51-200 | San Francisco, CA, United States | 51-200 | Exact match | 67 contacts → |
“Insightly, the new breed of CRM, helps modern businesses of all sizes build lifelong customer relationships and grow faster than ever before.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Crmonecrmone.comHQ: Menlo Park, CA, United StatesReported employees: 51-200 | Menlo Park, CA, United States | 51-200 | Exact match | 32 contacts → |
“CRMOne is a leading CRM platform that helps businesses to manage day-to-day business activities in one place.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Less Annoying CRMlessannoyingcrm.comHQ: St. Louis, MO, United StatesReported employees: 11-50 | St. Louis, MO, United States | 11-50 | Exact match | 28 contacts → |
“Less Annoying CRM is a simple CRM built from the ground up for small businesses.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Onepagecrmonepagecrm.comHQ: New York, NY, United StatesReported employees: 11-50 | New York, NY, United States | 11-50 | Exact match | 22 contacts → |
“OnePageCRM is an ultra-simple yet powerful CRM system built for small businesses in the consulting and professional services industry.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Claritysoft CRMclaritysoft.comHQ: Dublin, OH, United StatesReported employees: 11-50 | Dublin, OH, United States | 11-50 | Exact match | 20 contacts → |
“Claritysoft helps growing businesses manage customer relationships with ease.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Eway-Crmeway-crm.comHQ: Kansas City, MO, United StatesReported employees: 11-50 | Kansas City, MO, United States | 11-50 | Exact match | 17 contacts → |
“eWay-CRM is the best CRM for Microsoft Outlook.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Avidian Technologiesavidian.comHQ: Bellevue, WA, United StatesReported employees: 11-50 | Bellevue, WA, United States | 11-50 | Exact match | 17 contacts → |
“Avidian was founded in 2005 in the Seattle Metropolitan area by a diverse team of sales, business, and technical professionals, passionate about creating a user-friendly CRM.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Followup CRMfollowupcrm.comHQ: Fort Lauderdale, FL, United StatesReported employees: 11-50 | Fort Lauderdale, FL, United States | 11-50 | Exact match | 15 contacts → |
“Are your leads falling through the cracks?” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Mautic Marketing Automationmautic.orgHQ: Covina, CA, United StatesReported employees: 1-10 | Covina, CA, United States | 1-10 | Exact match | 12 contacts → |
“Mautic empowers businesses and organizations to deliver fully integrated marketing campaigns with a world-class open source marketing automation product, supported by a thriving…” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Salesoptimasalesoptima.comHQ: Raleigh, NC, United StatesReported employees: 11-50 | Raleigh, NC, United States | 11-50 | Exact match | 11 contacts → |
“SalesOptima is an online Customer Relationship Management (CRM) service that conveniently enables you to organize, manage, and nurture your customer contacts in the office or on…” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Liondeskliondesk.comHQ: San Diego, CA, United StatesReported employees: 11-50 | San Diego, CA, United States | 11-50 | Exact match | 10 contacts → |
“Known as the most affordable and easy-to-use CRM for sales professionals and small businesses, LionDesk allows you to go from Lead to Close in a highly customizable platform.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Crmboostcrmboost.comHQ: Miami Lakes, FL, United StatesReported employees: 1-10 | Miami Lakes, FL, United States | 1-10 | Exact match | 7 contacts → |
“CRMBOOST provides tools and services to help businesses manage their prospective leads and clients, and help them use the internet to market their products and services…” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Pinnacle AIgetpinnacle.aiHQ: Nashville, TN, United StatesReported employees: 201-500 | Nashville, TN, United States | 201-500 | Exact match | 6 contacts → |
“Hey there!” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Allclientsallclients.comHQ: Sparks, NV, United StatesReported employees: 1-10 | Sparks, NV, United States | 1-10 | Exact match | 5 contacts → |
“AllClients provides simple contact management and marketing automation in one, easy-to-use system.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  True Client PROtrueclientpro.comHQ: New York, United StatesReported employees: 1-10 | New York, United States | 1-10 | Exact match | 5 contacts → |
“At, our mission is to provide small business owners and entrepreneurs with a user friendly and all-inclusive platform that simplifies operations and helps them grow their brand.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | DEXgetdex.com HQ: San Francisco, CA, United StatesReported employees: 1-10 | San Francisco, CA, United States | 1-10 | Exact match | 4 contacts → |
“Dex is a personal CRM that helps you keep in touch, remember where you left off, and build stronger relationships.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Brilliance CRMbrilliancecrm.com HQ: Cullman, AL, United StatesReported employees: 1-10 | Cullman, AL, United States | 1-10 | Exact match | 2 contacts → |
“Brilliance CRM is a powerful cloud-based solution designed to streamline customer relationship management.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Soft Edge Marketingsoftedgemarketing.comHQ: Boise, ID, United StatesReported employees: 1-10 | Boise, ID, United States | 1-10 | Exact match | 2 contacts → |
“Businesses and nonprofits often miss out on money making opportunities because they lack the resources to build stronger relationships with their contacts.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Chaos Software Group, INCchaossoftware.com HQ: Richardson, TX, United StatesReported employees: 11-50 | Richardson, TX, United States | 11-50 | Exact match | 2 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 20 |  Flectrahqflectrahq.comHQ: Middletown, DE, United StatesReported employees: 11-50 | Middletown, DE, United States | 11-50 | Exact match | 2 contacts → |
“Flectra is The Open Source ERP and CRM System For Your Business.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  CRM PRO Partnerscrmpropartners.comHQ: Portland, OR, United StatesReported employees: 1-10 | Portland, OR, United States | 1-10 | Exact match | 2 contacts → |
“CRM Pro Partners is dedicated to the successful implementation of Contact Relationship Management (CRM) software within a business.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Haystackcrmhaystackcrm.comHQ: Greensboro, NC, United StatesReported employees: 1-10 | Greensboro, NC, United States | 1-10 | Exact match | 2 contacts → |
“HaystackCRM is the premier CRM solution for small to medium businesses.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Joggleletsjoggle.comHQ: Richmond, VA, United StatesReported employees: 1-10 | Richmond, VA, United States | 1-10 | Exact match | 1 contacts → |
“The uncomplicated mobile sales CRM.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Gold Coast Advisors, INCgoldcoastadvisors.comHQ: Orland Park, IL, United StatesReported employees: 1-10 | Orland Park, IL, United States | 1-10 | Exact match | 1 contacts → |
“Gold Coast Advisors develop contact management and Customer Relationship Management (CRM) solutions for all sizes of local, regional, and international businesses.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 24 of 77 company matches
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Open source contact management software companies: dataset insights
September 5, 2026These summaries describe recorded coverage in this saved dataset. Coverage describes records in RevenueBase, rather than a census of every business in this market.
Reported company sizes
77 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Freshness & accuracy
How recently the business emails on this list were verified
Email last verified
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.
Coverage describes records in RevenueBase, rather than a census of every business in this market.
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 5, 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 ↗
Questions about this company list
What does Exact match mean for open source contact management software 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 open source contact management software companies did RevenueBase find based in the United States?
The saved snapshot records 77 matching company records, 477 tracked contacts and 103 verified emails. The public preview displays 24 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 5, 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
Cite this list
RevenueBase Data Team. Top 24 open source contact management software companies based in the United States. Snapshot: September 5, 2026. https://revenuebase.ai/companies/open-source-contact-management-software-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
- AI companies based in the United States
- Cybersecurity companies based in the United States
- Manufacturing companies based in the United States
- Media companies based in the United States
- Oil and gas companies based in the United States
- Real estate companies based in the United States
Company intelligence · public preview
Top 24 open source contact management software companies based in the United States
RevenueBase records 77 matching company records for open source contact management software companies based in the United States, with 477 tracked contacts and 103 verified work emails.
This public preview shows 24 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 5, 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 24 open source contact management software 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 | Insightly CRM By Unbounceinsightly.com HQ: San Francisco, CA, United StatesReported employees: 51-200 | San Francisco, CA, United States | 51-200 | Exact match | 67 contacts → |
“Insightly, the new breed of CRM, helps modern businesses of all sizes build lifelong customer relationships and grow faster than ever before.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Crmonecrmone.com HQ: Menlo Park, CA, United StatesReported employees: 51-200 | Menlo Park, CA, United States | 51-200 | Exact match | 32 contacts → |
“CRMOne is a leading CRM platform that helps businesses to manage day-to-day business activities in one place.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Less Annoying CRMlessannoyingcrm.com HQ: St. Louis, MO, United StatesReported employees: 11-50 | St. Louis, MO, United States | 11-50 | Exact match | 28 contacts → |
“Less Annoying CRM is a simple CRM built from the ground up for small businesses.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Onepagecrmonepagecrm.com HQ: New York, NY, United StatesReported employees: 11-50 | New York, NY, United States | 11-50 | Exact match | 22 contacts → |
“OnePageCRM is an ultra-simple yet powerful CRM system built for small businesses in the consulting and professional services industry.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Claritysoft CRMclaritysoft.com HQ: Dublin, OH, United StatesReported employees: 11-50 | Dublin, OH, United States | 11-50 | Exact match | 20 contacts → |
“Claritysoft helps growing businesses manage customer relationships with ease.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Eway-Crmeway-crm.com HQ: Kansas City, MO, United StatesReported employees: 11-50 | Kansas City, MO, United States | 11-50 | Exact match | 17 contacts → |
“eWay-CRM is the best CRM for Microsoft Outlook.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Avidian Technologiesavidian.com HQ: Bellevue, WA, United StatesReported employees: 11-50 | Bellevue, WA, United States | 11-50 | Exact match | 17 contacts → |
“Avidian was founded in 2005 in the Seattle Metropolitan area by a diverse team of sales, business, and technical professionals, passionate about creating a user-friendly CRM.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Followup CRMfollowupcrm.com HQ: Fort Lauderdale, FL, United StatesReported employees: 11-50 | Fort Lauderdale, FL, United States | 11-50 | Exact match | 15 contacts → |
“Are your leads falling through the cracks?” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Mautic Marketing Automationmautic.org HQ: Covina, CA, United StatesReported employees: 1-10 | Covina, CA, United States | 1-10 | Exact match | 12 contacts → |
“Mautic empowers businesses and organizations to deliver fully integrated marketing campaigns with a world-class open source marketing automation product, supported by a thriving…” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Salesoptimasalesoptima.com HQ: Raleigh, NC, United StatesReported employees: 11-50 | Raleigh, NC, United States | 11-50 | Exact match | 11 contacts → |
“SalesOptima is an online Customer Relationship Management (CRM) service that conveniently enables you to organize, manage, and nurture your customer contacts in the office or on…” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Liondeskliondesk.com HQ: San Diego, CA, United StatesReported employees: 11-50 | San Diego, CA, United States | 11-50 | Exact match | 10 contacts → |
“Known as the most affordable and easy-to-use CRM for sales professionals and small businesses, LionDesk allows you to go from Lead to Close in a highly customizable platform.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Crmboostcrmboost.com HQ: Miami Lakes, FL, United StatesReported employees: 1-10 | Miami Lakes, FL, United States | 1-10 | Exact match | 7 contacts → |
“CRMBOOST provides tools and services to help businesses manage their prospective leads and clients, and help them use the internet to market their products and services…” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Pinnacle AIgetpinnacle.ai HQ: Nashville, TN, United StatesReported employees: 201-500 | Nashville, TN, United States | 201-500 | Exact match | 6 contacts → |
“Hey there!” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Allclientsallclients.com HQ: Sparks, NV, United StatesReported employees: 1-10 | Sparks, NV, United States | 1-10 | Exact match | 5 contacts → |
“AllClients provides simple contact management and marketing automation in one, easy-to-use system.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | True Client PROtrueclientpro.com HQ: New York, United StatesReported employees: 1-10 | New York, United States | 1-10 | Exact match | 5 contacts → |
“At, our mission is to provide small business owners and entrepreneurs with a user friendly and all-inclusive platform that simplifies operations and helps them grow their brand.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | DEXgetdex.com HQ: San Francisco, CA, United StatesReported employees: 1-10 | San Francisco, CA, United States | 1-10 | Exact match | 4 contacts → |
“Dex is a personal CRM that helps you keep in touch, remember where you left off, and build stronger relationships.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Brilliance CRMbrilliancecrm.com HQ: Cullman, AL, United StatesReported employees: 1-10 | Cullman, AL, United States | 1-10 | Exact match | 2 contacts → |
“Brilliance CRM is a powerful cloud-based solution designed to streamline customer relationship management.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Soft Edge Marketingsoftedgemarketing.com HQ: Boise, ID, United StatesReported employees: 1-10 | Boise, ID, United States | 1-10 | Exact match | 2 contacts → |
“Businesses and nonprofits often miss out on money making opportunities because they lack the resources to build stronger relationships with their contacts.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Chaos Software Group, INCchaossoftware.com HQ: Richardson, TX, United StatesReported employees: 11-50 | Richardson, TX, United States | 11-50 | Exact match | 2 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 20 | Flectrahqflectrahq.com HQ: Middletown, DE, United StatesReported employees: 11-50 | Middletown, DE, United States | 11-50 | Exact match | 2 contacts → |
“Flectra is The Open Source ERP and CRM System For Your Business.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | CRM PRO Partnerscrmpropartners.com HQ: Portland, OR, United StatesReported employees: 1-10 | Portland, OR, United States | 1-10 | Exact match | 2 contacts → |
“CRM Pro Partners is dedicated to the successful implementation of Contact Relationship Management (CRM) software within a business.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Haystackcrmhaystackcrm.com HQ: Greensboro, NC, United StatesReported employees: 1-10 | Greensboro, NC, United States | 1-10 | Exact match | 2 contacts → |
“HaystackCRM is the premier CRM solution for small to medium businesses.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Joggleletsjoggle.com HQ: Richmond, VA, United StatesReported employees: 1-10 | Richmond, VA, United States | 1-10 | Exact match | 1 contacts → |
“The uncomplicated mobile sales CRM.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Gold Coast Advisors, INCgoldcoastadvisors.com HQ: Orland Park, IL, United StatesReported employees: 1-10 | Orland Park, IL, United States | 1-10 | Exact match | 1 contacts → |
“Gold Coast Advisors develop contact management and Customer Relationship Management (CRM) solutions for all sizes of local, regional, and international businesses.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 24 of 77 company matches
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Open source contact management software companies: dataset insights
September 5, 2026These summaries describe recorded coverage in this saved dataset. Coverage describes records in RevenueBase, rather than a census of every business in this market.
Reported company sizes
77 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Freshness & accuracy
How recently the business emails on this list were verified
Email last verified
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.
Coverage describes records in RevenueBase, rather than a census of every business in this market.
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 5, 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 ↗
Questions about this company list
What does Exact match mean for open source contact management software 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 open source contact management software companies did RevenueBase find based in the United States?
The saved snapshot records 77 matching company records, 477 tracked contacts and 103 verified emails. The public preview displays 24 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 5, 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
Cite this list
RevenueBase Data Team. Top 24 open source contact management software companies based in the United States. Snapshot: September 5, 2026. https://revenuebase.ai/companies/open-source-contact-management-software-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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