Open source epub projects
Every project in the registry tagged epub, ranked by real GitHub adoption.
An ebook reader application supporting PDF, DjVu, EPUB, FB2 and many more formats, running on Cervantes, Kindle, Kobo, PocketBook and Android devices
A modern ebook manager and reader with sync and backup capacities for Windows, macOS, Linux, Android, iOS and Web
The official source code repository for the calibre ebook manager
Readest is a modern, feature-rich ebook reader designed for avid readers offering seamless cross-platform access, powerful tools, and an intuitive interface to
Generate audiobooks from e-books, voice cloning & 1158+ languages!
:books: Web app for browsing, reading and downloading eBooks stored in a Calibre database
PyMuPDF is a high performance Python library for data extraction, analysis, conversion & manipulation of PDF (and other) documents.
Calibre-Web but Automated and with tons of New Features! Fully automate and simplify your eBook set up!
A self-hosted library for your ebooks, comics, and audiobooks
A cross platform desktop reading app, based on the Readium Desktop toolkit
An Open source app to download and read books from shadow library (Anna’s Archive)
Translate full-length books and documents with Ollama, OpenAI-compatible, Gemini, Mistral, DeepSeek, Poe or OpenRouter. Preserves formatting. Resumes where you
A CLI text-to-speech tool using the Kokoro model, supporting multiple languages, voices (with blending), and various input formats including EPUB books and PDF
A versatile Python library for EPUB2/EPUB3 manipulation and processing.
Qt based ebook reader
Manage your ebook library without frustrations. Calibre compatible.
Render e-books in the browser
Booktype is a free, open source platform that produces beautiful, engaging books formatted for print, Amazon, iBooks and almost any ereader within minutes.
Fast, standalone EPUB to Kobo EPUB conversion tool.
Related tags
Frequently asked questions
How many open source epub projects are there?
This registry tracks 19 projects tagged epub, with 185,352 GitHub stars between them. The most-adopted is koreader at 29,761 stars.
Are these epub projects free to use?
Yes — 19 of the 19 carry an explicit open-source licence across 5 distinct licences, so there is no licence fee. Where a project also sells a hosted or enterprise version, the self-hosted path remains free.
Which epub project should I choose?
The list above is ranked by GitHub stars, but stars measure attention rather than fit. Check three things on each card: the licence (permissive versus copyleft), the language it is written in, and the last-push date — a high-star project that has not been pushed in a year is a liability.
Are these epub projects still maintained?
15 of the 19 were pushed in the last 90 days, and every card shows its exact last-push date so you can see the rest. Sort your shortlist by that date before committing to a migration.