FlowvsRadicale
Two self-hosted Calendar & Contacts projects, compared on the numbers selfhost.directory tracks live: score, popularity, release cadence and setup effort.
| Flow | Radicale | |
|---|---|---|
| Score | 43/100 | 69/100 |
| Rank in category | #25 of 30 in Calendar & Contacts | #1 of 30 in Calendar & Contacts |
| GitHub stars | 157 | 5 154 |
| Stars, last 30 days | — | +115 |
| Stable releases, 12 months | 3 | 19 |
| Latest release | v0.7.0 · 22 Aug 2026 | v3.9.0 · 25 Oct 2026 |
| Setup | Moderate | Easy |
| Official Docker image | No | Yes |
| License | AGPL-3.0 | GPL-3.0 |
| Main language | Dart | Python |
Which one should you pick?
Radicale scores 69/100 against 43/100 for Flow, so it is the safer default.
Radicale ships more often: 19 stable releases in the past year, against 3 for Flow.
If you want the quickest setup, Radicale is easier to run; Flow needs more configuration.
Radicale is growing faster right now (+115 stars in 30 days).
Flow details →Radicale details →All Calendar & Contacts projects →
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