Etesync-Knotes is a note-taking application for linux, compatible with notes created with the mobile app etesync-notes (see https://github.com/etesync/etesync-notes).
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.
List of features:
