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.
Keeper.sh vs SabreDAV
Two self-hosted Calendar & Contacts apps, compared on the facts we track: GitHub popularity and activity, license, language, Docker images and a rough hosting estimate.
Side by side
| Keeper.sh | SabreDAV | |
|---|---|---|
| Description | 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. | CardDAV, CalDAV, and WebDAV framework and server. |
| GitHub stars | 1,439 | 1,727 |
| Forks | – | – |
| Open issues | – | – |
| Commits (12 months) | 385 | 69 |
| Last activity | 2026-11-04 | 2026-11-01 |
| Latest release | v2.28.11 (2026-11-03) | 4.7.1 (2026-07-07) |
| Maintenance health | Active | Active |
| License | AGPL-3.0 | MIT |
| Language / platform | Docker | PHP |
| Docker Hub image | – | – |
| Docker pulls | – | – |
| Est. server size | ~1 GB, 1 vCPU | ~1 GB, 1 vCPU |
| Est. hosting from | $5/mo | $5/mo |
| Categories | Calendar & Contacts | Calendar & Contacts |
| Links | Website · Source | Website · Source |
What the numbers say
- SabreDAV is more popular on GitHub: 1.7k stars vs 1.4k for Keeper.sh.
- Keeper.sh had more commits in the last 12 months (385 vs 69).
- Keeper.sh published a release more recently (v2.28.11 on 2026-11-03; SabreDAV's latest is 4.7.1 on 2026-07-07).
- Keeper.sh is licensed under AGPL-3.0, SabreDAV under MIT. SabreDAV's license is permissive; Keeper.sh's is copyleft (changes you distribute must stay open).
- SabreDAV is written in PHP; the language of Keeper.sh is not listed upstream.
- Deployment options listed upstream: Keeper.sh: Docker; SabreDAV: none listed.
Summary: Keeper.sh leads on commit activity; SabreDAV leads on GitHub popularity. The right choice depends on the features you need — read both project descriptions and docs.
This summary is generated from GitHub, Docker Hub and awesome-selfhosted data as of 2026-11-05. It does not rate features or quality.
Frequently asked questions
Is Keeper.sh or SabreDAV more popular?
SabreDAV has more GitHub stars (1,727 vs 1,439 for Keeper.sh, as of 2026-11-05). Stars measure interest, not quality.
Which is more actively maintained, Keeper.sh or SabreDAV?
Keeper.sh had more commits over the last 12 months (385 vs 69). The last recorded activity was 2026-11-04 for Keeper.sh and 2026-11-01 for SabreDAV. Our health labels: Keeper.sh is “Active”, SabreDAV is “Active”.
What licenses do Keeper.sh and SabreDAV use?
Keeper.sh: AGPL-3.0. SabreDAV: MIT. SabreDAV's license is permissive; Keeper.sh's is copyleft (changes you distribute must stay open).
Can I run Keeper.sh and SabreDAV with Docker?
We did not detect a Docker Hub image for either app. The upstream listing mentions Docker as a deployment option for Keeper.sh. Check each project's documentation for install options.
Read more
SabreDAV
CardDAV, CalDAV, and WebDAV framework and server.
Browse all self-hosted Calendar & Contacts apps.