Company lists · Data refreshed September 2026
Top 25 Open source content management systems companies worldwide
RevenueBase identified 190 open source content management systems companies worldwide as of September 2026 and tracks 6,163 professional contacts across them, including 2,563 with verified work emails and 1,216 with mobile numbers. The United States is the largest market and London the largest hub.
This list covers open source content management systems companies worldwide, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 7, 2026. Country and city lists for open source content management systems companies follow the table.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest open source content management systems companies worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,454 contacts → | ||||
Indirect evidence “We are the people behind WordPress.com, Day One, WooCommerce, Jetpack, Tumblr, WordPress VIP, Simplenote, Longreads, Crowdsignal, Atavist, and more.” Source: RevenueBase Database · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 2 | 1,145 contacts → | ||||
Indirect evidence “Liferay helps organizations build for the future by enabling them to create, manage, and scale powerful solutions on the world's most flexible Digital Experience Platform (DXP).” Source: RevenueBase Database · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 3 | 1,111 contacts → | ||||
Indirect evidence “Acquia empowers ambitious digital innovators to craft the most productive, frictionless digital experiences that make a difference to their customers, employees, and communities.” Source: RevenueBase Database · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 4 | 284 contacts → | ||||
Indirect evidence “We deliver enterprise success for web publishing and digital commerce.” Source: RevenueBase Database · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 5 | 77 contacts → | ||||
Strong evidence “Strapi (strapi.io) is the leading open-source Headless CMS.” Source: RevenueBase Database · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 6 | 60 contacts → | ||||
Strong evidence “Forrit is the secure and scalable Content Management System (CMS) built specifically for large enterprises in highly regulated sectors.” Source: RevenueBase Database · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 7 | 47 contacts → | ||||
Strong evidence “Since 2001 we have been crafting and refining our Content Management System (Contensis) to reflect and improve on web technologies as they develop.” Source: RevenueBase Database · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 8 | 36 contacts → | ||||
Indirect evidence “Founded in 1977 and with a heritage spanning over 40 years, Compuco exists to empower socially responsible organisations with the digital tools they need to build a better world.” Source: RevenueBase Database · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 9 | 20 contacts → | ||||
Partial evidence “CrafterCMS enables a new era of faster, more agile and easier development of high-performance, large-scale and ultra-secure content-centric digital experiences that benefits large…” Source: RevenueBase Database · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 10 | 19 contacts → | ||||
Indirect evidence “CFM hat über die vergangenen Jahre einige innovative Produkte im Bereich der Internet-Technologie entwickelt, die wir jetzt effektiv nutzen und modular miteinander verknüpfen…” Source: RevenueBase Database · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 11 | 18 contacts → | ||||
Strong evidence “ButterCMS is a headless content management system and blog engine that integrates easily into any new or existing web project in minutes.” Source: RevenueBase Database · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 12 | 16 contacts → | ||||
Indirect evidence “Erfrischend direkt, ehrlich und bodenständig – darauf können Sie sich bei punkt.de verlassen!” Source: RevenueBase Database · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 13 | 15 contacts → | ||||
Indirect evidence “Cardware™ is an OS.” Source: RevenueBase Database · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 14 | 12 contacts → | ||||
Indirect evidence “Newsifier was founded in 2019 by two publishing professionals, Gerard (who at the time owned the biggest sports news site in the Netherlands) and Erik (who managed multiple news…” Source: RevenueBase Database · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 15 | 12 contacts → | ||||
Strong evidence “MODX is the company that backs the open source Content Management System and Web Application Framework, MODX, based in Dallas, TX, USA.” Source: RevenueBase Database · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 16 | 9 contacts → | ||||
Strong evidence “Since we've built on open source: not as a compromise, but as a conviction.” Source: RevenueBase Database · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 17 | 8 contacts → | ||||
Partial evidence “Contextual Code leverages 20+ years of experience crafting custom digital solutions for the web with enterprise CMS implementation.” Source: RevenueBase Database · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 18 | 8 contacts → | ||||
Strong evidence “Hello, we're ZenSource, the next evolution of open source.” Source: RevenueBase Database · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 19 | 8 contacts → | ||||
Indirect evidence “Froala creates editing software designed for exceptional user experiences and fast, efficient development.” Source: RevenueBase Database · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 20 | 8 contacts → | ||||
Indirect evidence “We are a specialized Internet company driven by our passion for software engineering, to meet our clients needs.” Source: RevenueBase Database · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 21 | 7 contacts → | ||||
Indirect evidence “ApostropheCMS was created because our agency needed a better, smoother tool that was not only easy for clients and editors but felt great to build in.” Source: RevenueBase Database · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 22 | 7 contacts → | ||||
Indirect evidence “Accuraty Solutions, LLC, based out of Champaign in Central Illinois, specializes in developing Internet services like CMS websites, file shares and online communities from the…” Source: RevenueBase Database · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 23 | 7 contacts → | ||||
Partial evidence “Craft is a content-first CMS that aims to make life enjoyable for developers and content managers alike.” Source: RevenueBase Database · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 24 | 7 contacts → | ||||
Indirect evidence “Byte Productions LLC is a family owned and operated company, founded in 1991.” Source: RevenueBase Database · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 25 | 7 contacts → | ||||
Strong evidence “Statamic has a radical approach to content management.” Source: RevenueBase Database · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: open source content management systems companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names open source content management systems companies.
- Partial evidence
- Its own public description names part of open source content management systems companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name open source content management systems companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 190 open source content management systems companies worldwide
See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 2,563 reachable decision-makers.
Free signup · no credit card
Open source content management systems companies worldwide at a glance
As of Sep 7, 2026Companies by employee count
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among open source content management systems companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- Coverage
- 4 countries, largest first: the United States, Germany, the United Kingdom, the Netherlands. Country and city lists for open source content management systems companies are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “open source content management systems companies”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names open source content management systems companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among open source content management systems companies, and records with no verified work email.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every listed company carries at least one verified work email, 2,563 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph between September 7, 2026 and September 14, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Open source content management systems companies by location
4 lists · largest firstEvery Open source content management systems companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Open source content management systems companies based in the United States92
- Open source content management systems companies based in Germany39
- Open source content management systems companies based in the United Kingdom30
- Open source content management systems companies based in the Netherlands29
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names open source content management systems companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many open source content management systems companies are there worldwide?
RevenueBase identified 190 open source content management systems companies worldwide as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Automattic, headquartered in San Francisco, tops this list with the largest team on record.
Which country has the most open source content management systems companies?
The United States leads with 92 companies, followed by Germany (39) and the United Kingdom (30). Every open source content management systems companies list by country and city is linked on this page.
Which city has the most open source content management systems companies?
London leads with 10 headquartered companies, followed by Berlin (4) and San Francisco (4).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 2,563 verified decision-maker contacts tracked across these 190 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled from the company graph between September 7, 2026 and September 14, 2026.
Ready to reach these companies? Verified emails and direct dials for all 190 open source content management systems companies worldwide. Start with a free account, no credit card.
Download this list →Related lists
Browse the directory
About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.