aTox | F-Droid - Free and Open Source Android App Repository
aTox. aTox is a free open-source messaging app for the Tox protocol. Why aTox? * Open-source: free to share, inspect, and change as you like. * Reasonable: sane defaults, no guesses about what you care about, doesn't ignore what you want. * End-to-end encrypted: the only people who can see your conversations are the people you're talking to.