CalibrevsUmlautAdaptarr
Two self-hosted projects, compared on the numbers selfhost.directory tracks live: score, popularity, release cadence and setup effort.
| Calibre | UmlautAdaptarr | |
|---|---|---|
| Score | 83/100 | 40/100 |
| Rank in category | #1 of 19 in Ebook Management | #120 of 142 in Media Management |
| GitHub stars | 26 268 | 309 |
| Stars, last 30 days | +269 | — |
| Stable releases, 12 months | 18 | 3 |
| Latest release | v9.17.0 · 23 Oct 2026 | v0.7.6 · 5 Aug 2026 |
| Setup | Easy | Moderate |
| Official Docker image | No | Yes |
| License | GPL-3.0 | — |
| Main language | Python | C |
Which one should you pick?
Calibre scores 83/100 against 40/100 for UmlautAdaptarr, so it is the safer default.
Calibre ships more often: 18 stable releases in the past year, against 3 for UmlautAdaptarr.
If you want the quickest setup, Calibre is easier to run; UmlautAdaptarr needs more configuration.
Calibre is growing faster right now (+269 stars in 30 days).
Calibre details →UmlautAdaptarr details →
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