Calibre
E-book library manager that can view, convert, and catalog e-books in most of the major e-book formats and provides a built-in Web server for remote clients.
High commit volume, frequent releases and growing activity.
Commit activity more than 92% of tracked projects; popularity more than 90%. How this is calculated.
Commits, last 11 months
| Stars | 26k |
|---|---|
| Latest release | v9.15.0 · 18 Sept 2026 |
| Repo updated | 27 Sept 2026 |
| Licence | GPL-3.0 |
| Built with | Python, deb |
Is Calibre actively maintained?
Over the last 11 months the project absorbed 2382 commits, of which 831 arrived in the most recent quarter — roughly 277 commits a month.
Activity is accelerating: the last quarter carried 75% more commits than the one before it.
The most recent tagged release, v9.15.0, shipped within the last month — a current, installable version exists today.
Among the 16 document management - e-books projects we track, Calibre currently has the highest health score.
What Calibre actually does
Calibre is an e-book library manager designed to view, convert, and catalog files across major e-book formats. It includes a built-in web server to allow remote access for clients over a network.
Best fit: Users who need to organise large local collections of digital literature and serve them to remote devices.
Worth knowing: The built-in web server may lack advanced access controls out of the box, requiring careful network configuration when exposed publicly.
Deployment notes
As a Python application distributed via deb packages, it typically requires persistent storage for the e-book library database and a reverse proxy for TLS termination.
Alternatives to Calibre
Projects in the same categories, ordered by health score.
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Browse, read and download eBooks using an existing Calibre database.
All-in-one solution, combining the modern lightweight web UI from Calibre-Web with the robust, versatile feature set of Calibre (fork of Calibre Web).
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Cross-platform e-book/manga/comic/pdf server and web reader with user management, ratings and reviews, and metadata support.