keeper.sh

GitHub Calendars & scheduling AGPL-3.0

Calendar sync tool & universal calendar MCP server. Aggregate, sync and control calendars on Google, Outlook, Office 365, iCloud, CalDAV or ICS.

Images: GitHub README · www.keeper.sh

Price Free (at collection) collected 2026-11-10

Get it free ↗

Stars: 1,456

Compiled by us from public information on GitHub. Prices and figures are as of collection time.

Verification checklist

Passed 8 of 13 checks

If you are unsure whether it will actually run, this is for you: we gathered public information, checked it automatically, and visited some of it directly. Anything we could not confirm stays marked "Not verified".

65Quality score

Finished product A complete product you install and use as-is (not a library, plugin or template). Pass Product term "server" with a way to run it Automatic · 2026-11-10
Clear license Usage terms are clear (open-source license or marketplace license). Pass AGPL-3.0 Automatic · 2026-11-10
Runs with Docker Can be started with Docker (image or compose). Pass Found compose.yaml at the repository root Checked directly · 2026-11-11
Online demo A demo you can click through. Once measured, we also confirmed it responds. Not verified No demo URL Automatic · 2026-11-10
Install guide Installation or setup instructions exist. Pass Found a "getting started" section in the README Checked directly · 2026-11-11
Real screens We keep copies of real product screens. Pass 3 screens kept Automatic · 2026-11-10
Proven usage Exceeds at least one of 500 GitHub stars · 100 sales · 10,000 monthly downloads. Pass 1,456 GitHub stars Automatic · 2026-11-10
Highly rated Rated 4.0 or higher by at least 5 reviewers. Not verified Too few reviews Automatic · 2026-11-10
Recently updated Updated within 12 months. Pass Last update 2026-10-27 Automatic · 2026-11-10
Self-hostable You get the source and can install it on your own server. Pass Open source · self-install Automatic · 2026-11-10
API Integrates with other systems via API or webhooks. Not verified Not mentioned Automatic · 2026-11-10
Multilingual Supports multiple languages (translations, RTL). Not verified Not mentioned Automatic · 2026-11-10
Mobile ready Responsive screens or mobile apps. Not verified Not mentioned Automatic · 2026-11-10

Results are judged automatically from public information we collected, and some were confirmed by visiting directly. We do not guarantee how the product works.

①