Riot
Мгновенный обмен сообщениями

Riot is a secure collaboration app for group chat, file transfer and voice/video conferencing built on the decentralized Matrix ecosystem, providing bridges and integrations to centralized services such as IRC, Slack, Gitter, etc

Замечания о безопасности

End-to-end encryption is in beta on Web as of Nov 5th 2016, with other platforms following week of Nov 14th

Поддерживаемые протоколы
SSL/TLS
Matrix
Информация для разработчиков
Лицензия проекта
Исходный код