CalibrevsZulip
Two self-hosted projects, compared on the numbers selfhost.directory tracks live: score, popularity, release cadence and setup effort.
| Calibre | Zulip | |
|---|---|---|
| Score | 83/100 | 82/100 |
| Rank in category | #1 of 19 in Ebook Management | #1 of 110 in Chat |
| GitHub stars | 26 268 | 26 133 |
| Stars, last 30 days | +269 | +190 |
| Stable releases, 12 months | 18 | 6 |
| Latest release | v9.17.0 · 23 Oct 2026 | 12.3 · 21 Sept 2026 |
| Setup | Easy | Moderate |
| Official Docker image | No | Yes |
| License | GPL-3.0 | Apache-2.0 |
| Main language | Python | Python |
Which one should you pick?
Calibre scores 83/100 against 82/100 for Zulip, so it is the safer default.
Calibre ships more often: 18 stable releases in the past year, against 6 for Zulip.
If you want the quickest setup, Calibre is easier to run; Zulip needs more configuration.
Calibre details →Zulip details →
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