Between 1999 and 2007 the Revues.org project was launched at the University of Avignon, and then in Marseille, at the premises of the EHESS.
Over the period 2007–2017 the project expanded at pace and gained a legal structure as a CNRS joint service unit (UMS). It was called the “Centre for Open Electronic Publishing” (Cleo) until 2017.
Since 2013 the OpenEdition project has been strengthened by funding from the Equipex programme and the internationalization of the platforms, grouped into a single OpenEdition portal.

In 2018 the Revues.org platform became OpenEdition Journals, and the Cleo was renamed OpenEdition Center. 

The big dates in OpenEdition’s history 

2022 –  OpenEdition Center becomes a Support and Research Unit

  • CNRS's Unité de service et de recherche UAR 2504 succeeds USR 2004 - Unité de service et de recherche.
  • Over 13,000 books in the OpenEdition Books catalog, including over 11,000 in open access.
  • Over 580 journals in the OpenEdition Journals catalog.
  • Over 5,000 research blogs in the Hypotheses catalog.
  • More than 50,000 events on Calenda.

2021 –  The OpenEdition team receives a collective Cristal

2018 – The Cleo becomes a CNRS service and research unit

  • CNRS Service and Research Unit - USR 2004, succeeds Joint Service  Unit - UMS 3287.
  • The Cleo becomes OpenEdition Center.
  • Over 5,000 books in the OpenEdition Books catalogue, including 4,000 in open access.
  • Over 500 journals in the OpenEdition Journals catalogue.

2017 – Revues.org becomes OpenEdition Journals 

2016 – OpenEdition recognized as national research infrastructure

  • OpenEdition is officially recognized as national research infrastructure by the French Ministry of Higher Education and Research.
  • OpenEdition is the joint winner of two European project tenders (Operas-D and Hirmeos).
  • Over 3,000 books in the OpenEdition Books catalogue.
  • Over 1,500 research blogs in the Hypotheses catalogue.
  • Implementation of Bilbo, the bibliographic robot, on OpenEdition Books.
  • Marin Dacos receives the 2016 CNRS Medal of Innovation.

2015 – 30,000 events on Calenda

  • OpenEdition trials an open peer review system for articles, in partnership with the journal Vertigo.
  • Calenda reaches the milestone of 30,000 published events.
  • Partnership and new referencing campaign with the Directory of Open Access Journals (DOAJ).
  • 64 million visits to all OpenEdition platforms.

2014 – OpenEdition Lab

2013 – OpenEdition Books

  • Inauguration of the book platform OpenEdition Books.
  • 600 research blogs online on Hypotheses.
  • 300 journals online on Revues.org.
  • The team moves to larger premises at the Château-Gombert technology hub in Marseille.

2012 – Hypotheses goes international

  • 500 online research blogs on Hypotheses.
  • The Cleo publishes and names its own XML-TEI schema : “TEI OpenEdition”.
  • Inauguration of the new version of Calenda with 20,000 announcements of scientific events.
  • The Cleo organizes THATCamp 2 in Paris.
  • Launch of the digitization support programme – the “15,000 Books Programme”.
  • The Cleo/OpenEdition receives the Equipex label “Investments for the Future”, guaranteeing its funding until 2020.
  • For the second consecutive year, the Cleo receives a Google Grant for Digital Humanities for the Bilbo project.
  • Continued internationalization of Hypotheses, with the opening of platforms in German, Spanish and Portuguese.
  • Launch of OpenEdition Press.
  • 100 journals on Revues.org are referenced in the DOAJ.

2011 – Creation of OpenEdition

  • Second Summer University for Digital Publishing in Marseille.
  • Inauguration of the Portuguese-language portal LusOpenEdition and establishment of a Cleo office in Lisbon.
  • The Cleo receives the Google Grant for Digital Humanities for the Bilbo project.
  • Marin Dacos joins the board of directors of the TEI Consortium.
  • Opening of Cleo’s English blog Open Electronic Publishing.
  • 150 online research journals on the Hypotheses platform.
  • Launch of the OpenEdition portal, bringing together the three platforms: Revues.org, Calenda and Hypotheses.
  • Marin Dacos receives the CNRS Cristal Medal.
  • 40,000 subscribers to the OpenEdition newsletter (La Lettre d’OpenEdition).
  • The Cleo participates in the Florence (Italy) and Madrid (Spain) THATCamps.
  • The Humanistica project takes shape.

2010 – Launch of Hypotheses

  • Publication of a book by Marin Dacos and Pierre Mounier, L’édition électronique, Editions La Découverte, Paris, 2010, 128 p.
  • The Cleo organizes the first European THATCamp in Paris, during which the Manifesto for the Digital Humanities is written collegially.
  • The Cleo participates for the first time at IFLA in Gothenburg (Sweden).
  • 100 research blogs online on Hypotheses. Launch of the OpenEdition Freemium programme for libraries and their users.
  • Inauguration of the Bookserver, which provides access to Revues.org content on mobile devices (ePub format).
  • The Cleo supports the Plume project.
  • Revues.org is fully compatible with the use of Zotero, a free bibliographic reference management software developed by the Center for History and New Media.

2009 – The Cleo becomes a joint service unit (UMS)

  • First Summer University for the Digital Humanities in Marseille.
  • New OAI-PMH repository,allowing the platform to deliver more structured data.
  • The Cleo becomes a joint service unit of the CNRS, the EHESS, the University of Provence and the University of Avignon.
  • 10,000 events on Calenda and 200 member journals on Revues.org.
  • Publication of the first edition of Read/Write Book: Le livre inscriptible.
  • New design for Revues.org with a catalogue, a more powerful search engine and multilingual navigation.
  • Launch ofManuscrits, a tool for managing submissions of journal articles.
  • Pooling of the Revues.org and Persée collections.
  • 200 journals join Revues.org.
  • Revues.org is on Twitter with the handle @openeditionsays.
  • Opening of CleoRadar, the news feed run by the team at the Centre for Open Electronic Publishing.
  • Launch of the research blogs platform Hypotheses.

2008 – 100 journals

  • First collections of books online, including the website of the Collections électroniques de l’Ifpo (French Institute of the Near East).
  • 100 journals online on Revues.org.
  • First Lodel training course in Canada.
  • All RSS feeds generated by Revues.org are available in a single OPML file to install on your aggregators. Ditto for Hypotheses.
  • Launch of a commercialization partnership with Cairn.info.
  • Beginning of the first stages of internationalization, with the implementation of multi-language browsing on the site of the journal Nuevo Mundo.
  • Cleo is a partner of the first French BookCamp.
  • Major update of the Lodel electronic publishing software, with the release of version 0.8.
  • The journal Études photographiques, the journal of the Société Française de Photographie, launches its new online design and leads the way by switching to full open access.

2007 – Creation of the Cleo

  • The project has a legal structure as a joint service unit (UMS) of the CNRS and is called the “Centre for Open Electronic Publishing” (Cleo).
  • Financial support from the TGE Adonis.
  • The Cleo moves to premises on the University of Aix-Marseille Saint-Charles campus.
  • Revues.org becomes a member of the Directory of Open Access Journals (DOAJ).
  • 100 journals online on Revues.org.
  • Cybergéo, a digital journal created in 1996, joins Revues.org.
  • Launch of L’Édition électronique ouverte, the Cleo blog.
  • Participation in the Marseille BarCamp, organized by the Fing.

2006 – 20,000 subscribers

  • 20,000 subscribers to the Revues.org newsletter (La Lettre de Revues.org).
  • Relocation to Marseille First OAI-PMH repository.
  • The small team leaves Avignon and moves to the Marseille premises of the EHESS at the Vieille Charité.
  • A small department is created at the EHESS to house the activities of Revues.org.

2004 – Support from the EHESS

  • 31 journals online on Revues.org.
  • Initial financial support from the EHESS

2003 – Calenda 2 

  • Redesign of the Calenda site, which is home to 3,000 announcements.
  • 13 journals online on Revues.org.

2002 – 8,000 subscribers

  • First Revues.org editorial board.
  • 8,000 subscribers to the Lettre de Revues.org.
  • 2,000 event announcements online on Calenda.

2001 – Initial funding 

  • 4,500 subscribers to the newsletter "Lettre de Revues.org".
  • 48,000 monthly visits to Calenda and Revues.org.
  • Eight journals on Revues.org.
  • 1,000 announcements on Calenda.
  • Initial funding from the Ministry of Research. 

2000 – Calenda 

  • Launch of Calenda, the academic events calendar.
  • 1,000 subscribers to the newsletter "Lettre de Revues.org".
  • Creation of an internal engine that allows a full-text search of all content on Revues.org. 

1999 – Creation of Revues.org