Keeper.sh vs Radicale
Both are self-hosted calendar & contacts projects. This page compares how well each one is actually maintained — the part you cannot see from a feature list.
| Keeper.sh | Radicale | |
|---|---|---|
| Health score | 69/100 | 76/100 |
| Commits (11 mo) | 297 | 1381 |
| Commits (last 3 mo) | 267 | 242 |
| Stars | 1.4k | 5.1k |
| Latest release | 23 Sept 2026 | 24 Sept 2026 |
| Licence | AGPL-3.0 | GPL-3.0 |
| Built with | Docker | Python, deb |
| Typical RAM | 1 GB | 1 GB |
Keeper.sh
Calendar syncing tool that pulls and pushes events between calendar sources and destinations via iCal/ICS or OAuth, with support for anonymized busy/free events.
Actively maintained with regular releases.
Commit activity more than 52% of tracked projects; popularity more than 40%. How this is calculated.
Commits, last 11 months
Radicale
Simple calendar and contact server with extremely low administrative overhead.
Actively maintained with regular releases.
Commit activity more than 85% of tracked projects; popularity more than 66%. How this is calculated.
Commits, last 11 months
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 calendar & contacts.