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 | 1,455 | 1,728 |
| Forks | – | – |
| Open issues | – | – |
| Commits (12 months) | 400 | 69 |
| Last activity | 2026-11-09 | 2026-11-01 |
| Latest release | v2.29.6 (2026-11-09) | 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
- Keeper.sh and SabreDAV have a similar number of GitHub stars (1.5k vs 1.7k).
- Keeper.sh had more commits in the last 12 months (400 vs 69).
- Keeper.sh published a release more recently (v2.29.6 on 2026-11-09; 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. 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 2026-11-15. It does not rate features or quality.
Frequently asked questions
Is Keeper.sh or SabreDAV more popular?
They are close: Keeper.sh has 1,455 GitHub stars and SabreDAV has 1,728 (as of 2026-11-15).
Which is more actively maintained, Keeper.sh or SabreDAV?
Keeper.sh had more commits over the last 12 months (400 vs 69). The last recorded activity was 2026-11-09 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.