Secure, End-to-End encrypted and journalized personal information synchronization for Android, the desktop and the web. Currently supports calendars, contacts and tasks (using OpenTasks), with more on the way.
In order to use this application you need to have an account with EteSync (paid hosting), or run your own instance (free and open source). Check out https://www.etesync.com/ for more information. The server code is available at https://github.com/etesync/journal-manager
EteSync is very easy to use. It seamlessly integrates with Android so you won't even notice you are using it. Security doesn't always have to come at a cost.
Thanks to End-to-End encryption, not even we can see your data. Don't believe us? You shouldn't, just verify yourself, both the client and server are open source.
A full history of your data is saved in an encrypted tamper-proof journal which means you can review, replay and revert any changes you have made at any point in time.
