Bookwyrm vs Calibre

Both are self-hosted document management - e-books projects. This page compares how well each one is actually maintained — the part you cannot see from a feature list.

Calibre scores 95 against Bookwyrm's 85, putting it ahead on the strength of a larger community. That measures project health, not feature fit — Bookwyrm may still be the right choice if it does what you need.
BookwyrmCalibre
Health score 85/100 95/100
Commits (11 mo) 1258 2382
Commits (last 3 mo) 499 831
Stars 2.8k 26k
Latest release 9 Sept 2026 18 Sept 2026
Licence ⊘ Proprietary GPL-3.0
Built with Python Python, deb
Typical RAM 1 GB 2 GB

Bookwyrm

Social network for tracking your reading, talking about books, writing reviews, and discovering what to read next.

85/100
Thriving

High commit volume, frequent releases and growing activity.

Maintenance 33/40
Releases 25/25
Community 11/20
Momentum 15/15

Commit activity more than 83% of tracked projects; popularity more than 56%. How this is calculated.

Commits, last 11 months

2025-10: 22 commits 2025-11: 109 commits 2025-12: 44 commits 2026-01: 125 commits 2026-02: 222 commits 2026-03: 43 commits 2026-04: 40 commits 2026-05: 154 commits 2026-06: 221 commits 2026-07: 175 commits 2026-08: 103 commits

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.

95/100
Thriving

High commit volume, frequent releases and growing activity.

Maintenance 37/40
Releases 25/25
Community 18/20
Momentum 15/15

Commit activity more than 92% of tracked projects; popularity more than 90%. How this is calculated.

Commits, last 11 months

2025-10: 112 commits 2025-11: 117 commits 2025-12: 291 commits 2026-01: 406 commits 2026-02: 151 commits 2026-03: 222 commits 2026-04: 118 commits 2026-05: 134 commits 2026-06: 289 commits 2026-07: 355 commits 2026-08: 187 commits

How to read this

Everything above is measured, not opinion: commit counts and release dates come from the public repositories, and the health score ranks each project against all 1352 projects we track. Read the full method.

What this comparison deliberately does not do is tell you which has the better feature set. Maintenance health tells you which project will still be receiving security fixes in two years. Decide that first, then compare features on the projects that survive the filter.

See every option in this category: self-hosted document management - e-books.