compare
calibre vs Komga
The same facts for both, read from GitHub every night, and the relation a person reviewed.
| Fact | calibre | Komga |
|---|---|---|
| Language | Python | Kotlin |
| Licence | GPL-3.0 | MIT |
| Stars | 26k | 6.7k |
| Latest | v9.15.0 | 1.28.1 |
| Last push | 2026-10-06 | 2026-10-05 |
| Release cadence | about 21 days between releases | about 6 days between releases |
| Active contributors | 21+ commit authors on the default branch in the last 90 days | 4 commit authors on the default branch in the last 90 days |
| Flags | none | none |
How they relate
Both replace Amazon Kindle. Alternatives to Amazon Kindle →
PartialcalibreThe library for your own DRM-free books, sent to a Kindle by email or USB, not the store.
PartialKomgaThe cloud library and reading progress for your own DRM-free books, synced to Kobo and KOReader, not the store. Books bought from Amazon stay on Kindle.
Both replace Google Play Books. Alternatives to Google Play Books →
PartialcalibreManages and converts your own ebooks and serves them to browsers and OPDS apps from its content server, with no store.
PartialKomgaThe library and reader for your own comics, manga and ebooks, in the browser and OPDS apps, not the store.
calibre
calibre
✓ signed The latest release, v9.15.0, carries a signature GitHub verified.
Loading the security report
Komga
unsigned The latest release, 1.28.1, carries no signature GitHub could verify.
Loading the security report