Company lists · Data refreshed September 2026
Top 25 Open access publishers worldwide
RevenueBase identified 890 open access publishers worldwide as of September 2026 and tracks 30,628 professional contacts across them, including 7,616 with verified work emails. The United States is the largest market and London the largest hub.
This list covers open access publishers 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 20, 2026. Country and city lists for open access publishers 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 access publishers worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 7,110 contacts → | ||||
Partial evidence “Be Part of Progress - together we bring greater understanding to the world Springer Nature is one of the leading publishers of research in the world.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 2 | 4,170 contacts → | ||||
Strong evidence “Headquartered in Switzerland, MDPI is a fully open access publisher with a portfolio of more than 500 journals across all scientific disciplines.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 3 | 3,064 contacts → | ||||
Indirect evidence “Taylor & Francis Group partners with researchers, scholarly societies, universities and libraries worldwide to bring knowledge to life.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 4 | 2,855 contacts → | ||||
Partial evidence “Frontiers is a leading research publisher.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 5 | 656 contacts → | ||||
Strong evidence “BMC is a pioneer of open access publishing.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 6 | 636 contacts → | ||||
Strong evidence “Hindawi is no longer in operation and the journals are now part of Wiley’s open access journal portfolio.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 7 | 617 contacts → | ||||
Strong evidence “Cureus (Part of Springer Nature) is an online, Open Access multi-specialty medical journal that publishes and promotes medical knowledge from around the world.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 8 | 524 contacts → | ||||
Indirect evidence “We work closely with researchers, librarians, and partners worldwide to produce academic journals, books and conference series.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 9 | 365 contacts → | ||||
Partial evidence “ITHAKA's mission is to expand access to knowledge and education around the world.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 10 | 315 contacts → | ||||
Indirect evidence “Founded in 1988 and headquartered in Hershey, Pennsylvania, USA with offices in New York, New York, USA, and in Beijing, China (IGI Science and Technology, Ltd.), IGI Global…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 11 | 267 contacts → | ||||
Strong evidence “Sage is a global academic publisher of books, journals, and library resources with a growing range of technologies to enable discovery, access, and engagement.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 12 | 214 contacts → | ||||
Indirect evidence “Acta Scientific is an Internationally peer-reviewed publishing group that is indulged in publishing original articles with an emphasis on latest research findings.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 13 | 188 contacts → | ||||
Strong evidence “Founded in 2004, IntechOpen, the world's leading publisher of Open Access books - Built by scientists, for scientists provides a collaborative environment for peer-reviewed…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 14 | 163 contacts → | ||||
Indirect evidence “Springer is a leading global scientific, technical and medical portfolio, providing researchers in academia, scientific institutions and corporate R&D departments with quality…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 15 | 136 contacts → | ||||
Partial evidence “JMIR Publications is the leading ehealth publisher, advancing progress in the health, engineering and social sciences to ultimately help people to live happier and healthier lives…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 16 | 116 contacts → | ||||
Strong evidence “Dove Medical Press Ltd is an online open access academic publisher specialising in science, technology and especially medicine.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 17 | 114 contacts → | ||||
Indirect evidence “Né du rapprochement des Éditions Belin et des Puf (les Presses universitaires de France), deux maisons emblématiques dans le domaine de l’éducation, de la connaissance certifiée…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 18 | 94 contacts → | ||||
Indirect evidence “SSRN is an online repository of scholarly research.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 19 | 78 contacts → | ||||
Strong evidence “DOAJ is a unique and extensive index of diverse open access journals from around the world, driven by a growing community, committed to ensuring quality content is freely…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 20 | 71 contacts → | ||||
Indirect evidence “Canadian Science Publishing (CSP) is committed to enhancing the reach, rigour, and relevance of science so that people can find, trust, and use it.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 21 | 69 contacts → | ||||
Partial evidence “Committed to open, trusted by researchers.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 22 | 65 contacts → | ||||
Indirect evidence “JSTOR is a digital library for scholars, researchers, and students.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 23 | 64 contacts → | ||||
Partial evidence “Cambridge Scholars Publishing is an independent academic publisher, committed to providing a forward-thinking publishing service that champions original thinking, whilst ensuring…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 24 | 59 contacts → | ||||
Indirect evidence “Unlock Knowledge to the World Our approach is simple: we unlock rich knowledge resources, display them in the best manner, and publish them as widely as possible.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 25 | 43 contacts → | ||||
Indirect evidence “OpenEdition is an international digital publishing portal in the humanities and social sciences that brings together four platforms: OpenEdition Journals (e-journals), OpenEdition…” Source: RevenueBase Database · checked Sep 20, 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 access publishers. 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 access publishers.
- Partial evidence
- Its own public description names part of open access publishers, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name open access publishers. 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 890 open access publishers worldwide
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Open access publishers worldwide at a glance
As of Sep 20, 2026Companies by employee count
Email recency is reported on each country list linked below.
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 access publishers, 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
- Every country. Country and city lists for open access publishers are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “open access publishers”. 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 access publishers), 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 access publishers, 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, 7,616 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 20, 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 access publishers by location
2 lists · largest firstEvery Open access publishers 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 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 access publishers, 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 access publishers are there worldwide?
RevenueBase identified 890 open access publishers 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?
Springer Nature, headquartered in Berlin, tops this list with the largest team on record.
Which country has the most open access publishers?
The United States leads with 166 companies, followed by the United Kingdom (66). Every open access publishers list by country and city is linked on this page.
Which city has the most open access publishers?
London leads with 42 headquartered companies, followed by New York (16) and Hyderabad (14).
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 7,616 verified decision-maker contacts tracked across these 890 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 20, 2026.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.