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

Minds is an open source social networking service.

BlackBerry Messenger, also known as BBM is an instant messenger and videotelephony application included on BlackBerry devices that allows messaging and voice …

Zulip is a chat and collaborative software.

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…

Threema is an encrypted instant messaging application for iOS, Android and Windows Phone.

Sicher is a freeware instant messaging application for iOS, Android, and Windows Phone. Sicher allows users to exchange end-to-end encrypted text messages, me…