Session is an end-to-end encrypted messenger that removes sensitive metadata collection, and is designed for people who want privacy and freedom from any forms of surveillance.
uTox
µTox the lightest and fluffiest Tox client
Dino
Dino is a modern open-source chat client for the desktop.
Kutupsal
IRC client which enables you to chat with people around world through large chatrooms or via private messaging.
Jami
Share, freely and privately. Decentralized messenger with VOIP.
Fractal
Fractal is a Matrix messaging app for GNOME written in Rust. Its interface is optimized for collaboration in large groups, such as free software projects.