Data as of Oct 14, 2026Based on 12,060 AI responses
Reviewed by Dimitry Apollonsky
EteSync provides secure, end-to-end encrypted synchronization of contacts, calendars, tasks, and notes with zero-knowledge privacy. It is fully open source (including the client and server) and can be run as your own instance, featuring an encrypted, tamper-proof change journal to review or revert changes. The platform offers multi-platform clients (Android, iOS, Web, Desktop) and developer APIs/SDKs to integrate and sync across your existing apps while preserving data privacy.
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of 12,060 answers across EteSync’s markets · since Jul 5
The market map
To-Do List AppsMentioned in
Share of answers in To-Do List Apps each week · 344 answers since Jul 5
Each engine’s share of its own answers across EteSync’s markets · since Jul 5
Where EteSync ranks in AI