Company lists · Data refreshed September 2026
Top 18 Open source CRM software companies based in the United Kingdom
RevenueBase identified 45 company matches for open source CRM software companies associated with the United Kingdom as of September 2026 and tracks 368 professional contacts across them, including 159 with verified work emails and 33 with mobile numbers. London is the largest hub.
This list covers company matches for open source CRM software companies associated with the United Kingdom, 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 18 largest open source CRM software companies based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 64 contacts → | ||||
Exact match “Workbooks is a CRM SaaS platform used by growing companies to run their business and engage effectively with their customers.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 2 | 57 contacts → | ||||
Exact match “Optimiser is a fully configurable business intelligence ecosystem that helps organisations manage relationships, operations, workflows, communications, and commercial activities…” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 3 | 55 contacts → | ||||
Exact match “Capsule was launched in 2009 following the founders' frustration with existing CRM services that were either overly simplistic or far too complex for most businesses.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 4 | 34 contacts → | ||||
Exact match “We help charities using inadequate, outdated, and overcomplicated technology, to start running like clockwork, by giving them a brilliant CRM.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 5 | 25 contacts → | ||||
Exact match “Gold-Vision CRM is a highly configurable, user-friendly customer relationship management (CRM) platform designed to unify and streamline sales and marketing processes for…” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 6 | 12 contacts → | ||||
Exact match “Our advanced, fully featured CRM software is easy to use and intuitive with a familiar interface and powerful features.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 7 | 11 contacts → | ||||
Exact match “BrightOffice are a software and services company.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 8 | 9 contacts → | ||||
Exact match “BuddyCRM is a sales management tool built by sales professionals, for sales professionals.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 9 | 7 contacts → | ||||
Exact match “Ruza provide CRM solutions for the voluntary sector and NFP organisations, implementing the CiviCRM open source database software and supporting people to streamline their…” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 10 | 6 contacts → | ||||
Exact match “We are a leading provider of feature-rich applications based on our core CRM product.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 11 | 5 contacts → | ||||
Exact match “Since 2010, CMIS-UK has been providing the outstanding cloud based Rubi CRM system for businesses across the UK and abroad.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 12 | 4 contacts → | ||||
Exact match “CRM-UK is a software company that has delivered significant results for many happy customers over almost two decades of specializing in CRM software (Customer Relationship…” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 13 | 3 contacts → | ||||
Exact match “ProAptivity 'The CRM Specialists' sell, implement and support Customer Relationship Management (CRM) solutions.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 14 | 2 contacts → | ||||
Exact match “At Digital Cloud UK, we believe any business merits Customer Relationship Management systems – a system that’s ready to go, easy to setup and use.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 15 | 2 contacts → | ||||
Exact match “Creators of Clockwork CRM - Customer Relationship Management software that streamlines your business processes, improves customer retention and gets your business running like…” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 16 | 2 contacts → | ||||
Exact match “At Torteli & Co.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 17 | 2 contacts → | ||||
Exact match “Looking for a CRM that moulds around you?” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 18 | 2 contacts → | ||||
Exact match “With over 75 years of combined experience in the education sector, we understand just how important it is to have strong relationships with schools.” 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 CRM 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 18 of 45 open source CRM software companies based in the United Kingdom
See the full list, filter by size, metro and specialty, and access 159 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Open source CRM software companies based in the United Kingdom 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 Kingdom whose business descriptions match “open source CRM 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 159 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 CRM software companies”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many open source CRM software companies are there based in the United Kingdom?
RevenueBase identified 45 company matches for open source CRM software companies associated with the United Kingdom 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?
Workbooks CRM tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most open source CRM software companies?
London leads with 11 company records, followed by Manchester (3) and Glasgow (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 159 professional contacts with verified work emails tracked across these 45 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 45 open source CRM software companies based in the United Kingdom. Start with a free account, no credit card.
Download this list →Related lists
Open source CRM software companies by geography
- Open source CRM software companies based in the United States
- Open source CRM software companies based in France
- Open source CRM software companies based in Germany
- Open source CRM software companies based in Canada
- Open source CRM software companies based in Brazil
- Open source CRM software companies based in India
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.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Open source CRM software companies based in the United States
- Open source CRM software companies based in France
- Open source CRM software companies based in Germany
- Open source CRM software companies based in Canada
- Open source CRM software companies based in Brazil
- Open source CRM software companies based in India
Company intelligence · public preview
Top 18 open source CRM software companies based in the United Kingdom
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 45 matching company records for open source CRM software companies based in the United Kingdom, with 368 tracked contacts and 159 verified work emails.
This public preview shows 18 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 18 open source CRM software companies based in the United Kingdom
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 |  Workbooks CRMworkbooks.comHQ: Reading, United KingdomReported employees: 51-200 | Reading, United Kingdom | 51-200 | Exact match | 64 contacts → |
“Workbooks is a CRM SaaS platform used by growing companies to run their business and engage effectively with their customers.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Optimiseroptimiser.comHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 57 contacts → |
“Optimiser is a fully configurable business intelligence ecosystem that helps organisations manage relationships, operations, workflows, communications, and commercial activities…” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Capsulecapsulecrm.comHQ: Manchester, United KingdomReported employees: 11-50 | Manchester, United Kingdom | 11-50 | Exact match | 55 contacts → |
“Capsule was launched in 2009 following the founders' frustration with existing CRM services that were either overly simplistic or far too complex for most businesses.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Beacon CRMbeaconcrm.org HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 34 contacts → |
“We help charities using inadequate, outdated, and overcomplicated technology, to start running like clockwork, by giving them a brilliant CRM.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Gold-Vision CRMgold-vision.comHQ: Northampton, United KingdomReported employees: 11-50 | Northampton, United Kingdom | 11-50 | Exact match | 25 contacts → |
“Gold-Vision CRM is a highly configurable, user-friendly customer relationship management (CRM) platform designed to unify and streamline sales and marketing processes for…” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Opencrmopencrm.co.ukHQ: Richmond, United KingdomReported employees: 11-50 | Richmond, United Kingdom | 11-50 | Exact match | 12 contacts → |
“Our advanced, fully featured CRM software is easy to use and intuitive with a familiar interface and powerful features.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Brightofficebrightoffice.co.ukHQ: Preston, United KingdomReported employees: 11-50 | Preston, United Kingdom | 11-50 | Exact match | 11 contacts → |
“BrightOffice are a software and services company.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Buddycrmbuddycrm.comHQ: Walsall, United KingdomReported employees: 11-50 | Walsall, United Kingdom | 11-50 | Exact match | 9 contacts → |
“BuddyCRM is a sales management tool built by sales professionals, for sales professionals.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  RUZAruzasolutions.co.ukHQ: Bradford, United KingdomReported employees: 1-10 | Bradford, United Kingdom | 1-10 | Exact match | 7 contacts → |
“Ruza provide CRM solutions for the voluntary sector and NFP organisations, implementing the CiviCRM open source database software and supporting people to streamline their…” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Advanced Software LTDadvancedsoftware.co.ukHQ: Newark, United KingdomReported employees: 11-50 | Newark, United Kingdom | 11-50 | Exact match | 6 contacts → |
“We are a leading provider of feature-rich applications based on our core CRM product.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Cmis UK LTDcmis-uk.co.ukHQ: Leeds, United KingdomReported employees: 1-10 | Leeds, United Kingdom | 1-10 | Exact match | 5 contacts → |
“Since 2010, CMIS-UK has been providing the outstanding cloud based Rubi CRM system for businesses across the UK and abroad.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Crm-Uk.com LTDcrm-uk.comHQ: Banbury, United KingdomReported employees: 1-10 | Banbury, United Kingdom | 1-10 | Exact match | 4 contacts → |
“CRM-UK is a software company that has delivered significant results for many happy customers over almost two decades of specializing in CRM software (Customer Relationship…” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Proaptivity 'the CRM Specialists'proaptivity.comHQ: Derry, United KingdomReported employees: 1-10 | Derry, United Kingdom | 1-10 | Exact match | 3 contacts → |
“ProAptivity 'The CRM Specialists' sell, implement and support Customer Relationship Management (CRM) solutions.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Digital Cloud UKdigitalclouduk.comHQ: Manchester, United KingdomReported employees: 1-10 | Manchester, United Kingdom | 1-10 | Exact match | 2 contacts → |
“At Digital Cloud UK, we believe any business merits Customer Relationship Management systems – a system that’s ready to go, easy to setup and use.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Mythic Softwaremythic.softwareHQ: Bournemouth, United KingdomReported employees: 1-10 | Bournemouth, United Kingdom | 1-10 | Exact match | 2 contacts → |
“Creators of Clockwork CRM - Customer Relationship Management software that streamlines your business processes, improves customer retention and gets your business running like…” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Torteli & COtorteli.coHQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 2 contacts → |
“At Torteli & Co.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Time Assisttimeassist.co.ukHQ: Birmingham, United KingdomReported employees: 1-10 | Birmingham, United Kingdom | 1-10 | Exact match | 2 contacts → |
“Looking for a CRM that moulds around you?” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Hummingbirdcrmhummingbirdcrm.com HQ: Cheshire, United KingdomReported employees: 1-10 | Cheshire, United Kingdom | 1-10 | Exact match | 2 contacts → |
“With over 75 years of combined experience in the education sector, we understand just how important it is to have strong relationships with schools.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 18 of 45 company matches
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Open source CRM 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
45 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 CRM 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 CRM software companies did RevenueBase find based in the United Kingdom?
The saved snapshot records 45 matching company records, 368 tracked contacts and 159 verified emails. The public preview displays 18 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
Open source CRM software companies by geography
- Open source CRM software companies based in the United States
- Open source CRM software companies based in France
- Open source CRM software companies based in Germany
- Open source CRM software companies based in Canada
- Open source CRM software companies based in Brazil
- Open source CRM software companies based in India
Cite this list
RevenueBase Data Team. Top 18 open source CRM software companies based in the United Kingdom. Snapshot: September 5, 2026. https://revenuebase.ai/companies/open-source-crm-software-companies/united-kingdom.
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
- Open source CRM software companies based in the United States
- Open source CRM software companies based in France
- Open source CRM software companies based in Germany
- Open source CRM software companies based in Canada
- Open source CRM software companies based in Brazil
- Open source CRM software companies based in India
Company intelligence · public preview
Top 18 open source CRM software companies based in the United Kingdom
RevenueBase records 45 matching company records for open source CRM software companies based in the United Kingdom, with 368 tracked contacts and 159 verified work emails.
This public preview shows 18 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 18 open source CRM software companies based in the United Kingdom
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 | Workbooks CRMworkbooks.com HQ: Reading, United KingdomReported employees: 51-200 | Reading, United Kingdom | 51-200 | Exact match | 64 contacts → |
“Workbooks is a CRM SaaS platform used by growing companies to run their business and engage effectively with their customers.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Optimiseroptimiser.com HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 57 contacts → |
“Optimiser is a fully configurable business intelligence ecosystem that helps organisations manage relationships, operations, workflows, communications, and commercial activities…” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Capsulecapsulecrm.com HQ: Manchester, United KingdomReported employees: 11-50 | Manchester, United Kingdom | 11-50 | Exact match | 55 contacts → |
“Capsule was launched in 2009 following the founders' frustration with existing CRM services that were either overly simplistic or far too complex for most businesses.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Beacon CRMbeaconcrm.org HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 34 contacts → |
“We help charities using inadequate, outdated, and overcomplicated technology, to start running like clockwork, by giving them a brilliant CRM.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Gold-Vision CRMgold-vision.com HQ: Northampton, United KingdomReported employees: 11-50 | Northampton, United Kingdom | 11-50 | Exact match | 25 contacts → |
“Gold-Vision CRM is a highly configurable, user-friendly customer relationship management (CRM) platform designed to unify and streamline sales and marketing processes for…” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Opencrmopencrm.co.uk HQ: Richmond, United KingdomReported employees: 11-50 | Richmond, United Kingdom | 11-50 | Exact match | 12 contacts → |
“Our advanced, fully featured CRM software is easy to use and intuitive with a familiar interface and powerful features.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Brightofficebrightoffice.co.uk HQ: Preston, United KingdomReported employees: 11-50 | Preston, United Kingdom | 11-50 | Exact match | 11 contacts → |
“BrightOffice are a software and services company.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Buddycrmbuddycrm.com HQ: Walsall, United KingdomReported employees: 11-50 | Walsall, United Kingdom | 11-50 | Exact match | 9 contacts → |
“BuddyCRM is a sales management tool built by sales professionals, for sales professionals.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | RUZAruzasolutions.co.uk HQ: Bradford, United KingdomReported employees: 1-10 | Bradford, United Kingdom | 1-10 | Exact match | 7 contacts → |
“Ruza provide CRM solutions for the voluntary sector and NFP organisations, implementing the CiviCRM open source database software and supporting people to streamline their…” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Advanced Software LTDadvancedsoftware.co.uk HQ: Newark, United KingdomReported employees: 11-50 | Newark, United Kingdom | 11-50 | Exact match | 6 contacts → |
“We are a leading provider of feature-rich applications based on our core CRM product.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Cmis UK LTDcmis-uk.co.uk HQ: Leeds, United KingdomReported employees: 1-10 | Leeds, United Kingdom | 1-10 | Exact match | 5 contacts → |
“Since 2010, CMIS-UK has been providing the outstanding cloud based Rubi CRM system for businesses across the UK and abroad.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Crm-Uk.com LTDcrm-uk.com HQ: Banbury, United KingdomReported employees: 1-10 | Banbury, United Kingdom | 1-10 | Exact match | 4 contacts → |
“CRM-UK is a software company that has delivered significant results for many happy customers over almost two decades of specializing in CRM software (Customer Relationship…” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Proaptivity 'the CRM Specialists'proaptivity.com HQ: Derry, United KingdomReported employees: 1-10 | Derry, United Kingdom | 1-10 | Exact match | 3 contacts → |
“ProAptivity 'The CRM Specialists' sell, implement and support Customer Relationship Management (CRM) solutions.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Digital Cloud UKdigitalclouduk.com HQ: Manchester, United KingdomReported employees: 1-10 | Manchester, United Kingdom | 1-10 | Exact match | 2 contacts → |
“At Digital Cloud UK, we believe any business merits Customer Relationship Management systems – a system that’s ready to go, easy to setup and use.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Mythic Softwaremythic.software HQ: Bournemouth, United KingdomReported employees: 1-10 | Bournemouth, United Kingdom | 1-10 | Exact match | 2 contacts → |
“Creators of Clockwork CRM - Customer Relationship Management software that streamlines your business processes, improves customer retention and gets your business running like…” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Torteli & COtorteli.co HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 2 contacts → |
“At Torteli & Co.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Time Assisttimeassist.co.uk HQ: Birmingham, United KingdomReported employees: 1-10 | Birmingham, United Kingdom | 1-10 | Exact match | 2 contacts → |
“Looking for a CRM that moulds around you?” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Hummingbirdcrmhummingbirdcrm.com HQ: Cheshire, United KingdomReported employees: 1-10 | Cheshire, United Kingdom | 1-10 | Exact match | 2 contacts → |
“With over 75 years of combined experience in the education sector, we understand just how important it is to have strong relationships with schools.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 18 of 45 company matches
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Open source CRM 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
45 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 CRM 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 CRM software companies did RevenueBase find based in the United Kingdom?
The saved snapshot records 45 matching company records, 368 tracked contacts and 159 verified emails. The public preview displays 18 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.
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Cite this list
RevenueBase Data Team. Top 18 open source CRM software companies based in the United Kingdom. Snapshot: September 5, 2026. https://revenuebase.ai/companies/open-source-crm-software-companies/united-kingdom.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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