No. 16 of 27 ·Open Educational Resource Platforms

Kallipos

Web

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Freedom report

One barScore 5.5

Free tierNo free tier on record
Open codeNo open-source code on record
Runs widely1 of 6 device platforms
DocumentedPlans, terms and facts published

Kallipos is ranked #16 of 27 in open educational resource platforms on Freedom251. It runs on Web.

Compared on open educational resource platforms

Free plan: Yes
Authoring tools: Yes
Publishing workflow: Yes
Download formats: PDF, EPUB
Content review: Yes

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The record

Purpose: KALLIPOS develops electronic textbooks, mainly for students and professors at Greek universities, and makes them freely available through its digital repository under open licenses.
Access: Every book in the repository is freely available in its entirety for users to download.
Book formats: KALLIPOS e-books can be viewed or edited in supported formats including PDF, EPUB, LaTeX, and DocBook.
Repository contents: The repository provides books as complete books or as independent chapters.
Education: Most repository books are educational, and many are recommended by teachers for their courses.
Identifiers: The FAQ says the books have ISBNs and EUDOXOS codes and are included in the relevant directories.
Authoring workflow: Authors submit proposals through open calls, and proposals are evaluated by the project's Scientific Coordination and Evaluation Committee with external evaluators.
Editorial process: After a proposal is approved, the manuscript proceeds to linguistic and technical editing before upload to the repository.
Authoring formats: The authoring page provides writing formats for 2026 in DOCX and lists InDesign and XeLaTeX resources.
Registry: The project's web-based Registration and Administration Platform supports member and collaborator work, proposal administration, and evaluation workflows.
Eligibility: The registry lists professors and lecturers, retired or emeritus professors, researchers, scientific and research associates, freelance scientists, and PhD and master's degree holders as eligible registrants.
Support: KALLIPOS+ users can submit support requests to the project's Central Support Team through a dedicated support platform or by email.
Project operators: The project is implemented by the NTUA Research Committee in collaboration with HEAL-Link, and the two organizations hold copyright in produced works.
2026 work: The 2026 extension of KALLIPOS+ includes large-scale updates, translations of existing textbooks, and production of EPUB3 editions.

Where it ranks on Freedom251

Best Open Educational Resource Platforms in 2026#16 of 27

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Sources

kallipos.gr/en/the-initiative/· checked 4 Oct 2026
kallipos.gr/en/faq-en/· checked 4 Oct 2026
kallipos.gr/en/calls/· checked 4 Oct 2026
kallipos.gr/en/authoring-and-editing/· checked 4 Oct 2026
kallipos.gr/en/administration-and-support/· checked 4 Oct 2026
kallipos.gr/en/contact-us/· checked 4 Oct 2026
kallipos.gr/en/institutions/· checked 5 Oct 2026
kallipos.gr/en/· checked 28 Sept 2026