Company lists · Data refreshed November 2026

Top 25 Open source software support companies worldwide

RevenueBase identified 957 company matches for open source software support companies worldwide as of November 2026 and tracks 7,822 professional contacts across them, including 1,709 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for open source software support companies worldwide, 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 November 5, 2026. Country and city lists for open source software support companies follow the table.

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.

How to read this list RevenueBase SmartSearch · Exact Recorded Nov 5, 2026 How this list was built
957Companies
7,822Contacts tracked
1,709Verified emails
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The 25 largest open source software support companies worldwide

Ranked by team size
Top 25 of 957 company matches for open source software support companies worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 5, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchDurham, NC, United StatesHQ recorded Nov 5, 2026201-500334 contacts →

Exact match

“Percona is widely recognized as a world-class open source database software, support, and services company.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
2Exact matchNoida, IndiaHQ recorded Nov 5, 202651-200206 contacts →

Exact match

“Keen & Able Computers Pvt Ltd was established in 1996 as Open Source movement was just beginning to take shape.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
3Exact matchBussigny, SwitzerlandHQ recorded Nov 5, 202651-200143 contacts →

Exact match

“Open Source specialist, Camptocamp is an innovative company in the software implementation of Geographic Information Systems (GIS), business management (Odoo ERP) and IT…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
4Exact matchBern, SwitzerlandHQ recorded Nov 5, 202651-200132 contacts →

Exact match

“Adfinis is a leading provider of open source IT solutions.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
5Exact matchMumbai, IndiaHQ recorded Nov 5, 202651-200123 contacts →

Exact match

“Frappe creates 100% open source software to help businesses grow sustainably.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
6Exact matchCambridge, United KingdomHQ recorded Nov 5, 202651-200116 contacts →

Exact match

“Collabora is a global consultancy specializing in delivering the benefits of Open Source software to the commercial world.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
7Exact matchSandy, UT, United StatesHQ recorded Nov 5, 202651-200115 contacts →

Exact match

“HeroDevs is the industry experts on “life after end-of-life” for open-source software.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
8Exact matchMinsk, BelarusHQ recorded Nov 5, 202651-200115 contacts →

Exact match

“The Invento Labs outsourcing company is a team of experts who develop and deploy open source IT solutions.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
9Exact matchSao Paulo, BrazilHQ recorded Nov 5, 202651-20097 contacts →

Exact match

“A 4Linux teve início com um grupo de estudo no ano de 1995 com 4 jovens universitários que se reuniam para trocar experiências sobre o sistema operacional Linux e outros softwares…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
10Exact matchBilbao, SpainHQ recorded Nov 5, 202651-20095 contacts →

Exact match

“Irontec es una empresa ubicada en Bilbao, en un centro empresarial con gran presencia de empresas tecnológicas a orillas de la ría del Nervión.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
11Exact matchRotterdam, NetherlandsHQ recorded Nov 5, 202651-20094 contacts →

Exact match

“Proxy is a leading IT service provider with a strong focus on Open Source Technology.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
12Exact matchColima, MexicoHQ recorded Nov 5, 202651-20085 contacts →

Exact match

“Vauxoo es una empresa latinoamericana de servicios de soporte, coaching, formación, desarrollos e implementación que fundamenta su estrategia operativa en la masificación del…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
13Exact matchVohburg, GermanyHQ recorded Nov 5, 202651-20082 contacts →

Exact match

“B1 Systems GmbH is a provider of Linux/Open Source consulting, training, development & support services.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
14Exact matchLondon, United KingdomHQ recorded Nov 5, 202651-20081 contacts →

Exact match

“Support Revolution provides 3rd party Oracle and SAP Software Support & Maintenance and help to save customers up to 90% on what they currently pay.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
15Exact matchAhmedabad, IndiaHQ recorded Nov 5, 202651-20077 contacts →

Exact match

“Zestbrains pvt ltd is a Leading software development company based in India catering to the enterprise solutions worldwide.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
16Exact matchMontréal, CanadaHQ recorded Nov 5, 202651-20070 contacts →

Exact match

“Savoir-faire Linux® is an outstanding team of 50 Free Software consultants based in Montreal and Rennes.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
17Exact matchBangalore, IndiaHQ recorded Nov 5, 202611-5070 contacts →

Exact match

“Netzary Infodynamics is a privately held systems integrator and solutions provider with deep roots in free and open source community.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
18Exact matchFulda, GermanyHQ recorded Nov 5, 2026201-50060 contacts →

Exact match

“Imprint: https://it-novum.com/impressum/ it-novum hilft Unternehmen, die Herausforderungen der Digitalisierung zu bewältigen.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
19Exact matchAnkara, TürkiyeHQ recorded Nov 5, 202611-5054 contacts →

Exact match

“Since 2007 We have been providing cutting-edge enterprise solutions with free and open source softwares.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
20Exact matchManama, BahrainHQ recorded Nov 5, 202611-5046 contacts →

Exact match

“Openinside Co.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
21Exact matchHyderabad, IndiaHQ recorded Nov 5, 202611-5043 contacts →

Exact match

“Samyutha Info Technologies is a Hyderabad-based IT Services, Solutions, and Consulting company specializing in Open Source technologies.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
22Exact matchKarlsruhe, GermanyHQ recorded Nov 5, 202651-20042 contacts →

Exact match

“Der Anspruch der synyx GmbH & Co.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
23Exact matchDhahran, Saudi ArabiaHQ recorded Nov 5, 202611-5042 contacts →

Exact match

“Open Source Solutions is your leading partner and service provider for various Infrastructure-based open source solutions in Saudi Arabia.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
24Exact matchWarsaw, PolandHQ recorded Nov 5, 202651-20041 contacts →

Exact match

“Linux® Polska - we are a Polish IT company founded in 2009.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
25Exact matchİstanbul, TürkiyeHQ recorded Nov 5, 202611-5041 contacts →

Exact match

“Ozgur Software Inc.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase

Showing 25 of 957 open source software support companies worldwide

See the full list, filter by size, metro and specialty, and access 1,709 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Open source software support companies worldwide at a glance

As of Nov 5, 2026
21.8%Verified-email coverage
8.2Average contacts per company
1-10Median size (employees)
1.3%Largest-city concentration · London
Nov 5, 2026Page data refreshed

Companies by employee count

1-10
628
11-50
242
51-200
62
201-500
6
501-1,000
3
5,001-10,000
1
10001+
2

Email recency is reported on each country list linked below.

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.
Coverage
Every country. Country and city lists for open source software support companies are linked below.
What qualifies
Company records worldwide whose business descriptions match “open source software support 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. 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 1,709 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 November 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.

Open source software support companies by location

8 lists · largest first

Every Open source software support companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

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 software support companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many open source software support companies are there worldwide?

RevenueBase identified 957 company matches for open source software support companies worldwide as of November 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?

Percona tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most open source software support companies?

The United States leads with 87 companies, followed by India (70) and France (62). Every open source software support companies list by country and city is linked on this page.

Which city has the most open source software support companies?

London leads with 12 company records, followed by Paris (12) and Bangalore (10).

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 1,709 professional contacts with verified work emails tracked across these 957 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 November 5, 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 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.