Tox is a peer-to-peer instant-messaging and video-calling protocol that offers end-to-end encryption.

Wire is a cross-platform, encrypted instant messaging client created by Wire Swiss. It is available for iOS, Android, Linux, Windows, macOS and Web browser cl…

RetroShare is open source software for encrypted filesharing, serverless email, instant messaging, online chat, and BBS, based on a friend-to-friend network b…

Zulip is a chat and collaborative software.