Etar-Calendar
The premium Open Source alternative to Google Calendar
🎯 Best for:Android users seeking a de-Googled mobile experience.
What is Etar-Calendar?
A lightweight, privacy-focused calendar application for Android based on the AOSP calendar source. It supports CalDAV synchronization and local storage without requiring proprietary Google Play Services.
Tech Stack
JavaCalendar & Scheduling
Why Etar-Calendar?
- • No background tracking
- • Supports multiple sync protocols
- • Material Design interface
Limitations
- • No built-in video conferencing
- • Limited smart suggestions
- • Android only
3/5/2026
Last Update
423
Forks
431
Issues
GPL-3.0
License
Financial Leak Detected
Stop the "SaaS Tax"
Your team could be burning cash. Switching to Etar-Calendar instantly boosts your runway.
Competitor Cost
-$1,440
/ year (est. based on Google Calendar)
Self-Hosted
$0
/ year
Team Size10 Users
150+
SAVE 100%