RetroShare

Low-latency, high quality voice/text chat software.

Instant messaging transport. It allows users to chat together even when they are using different IM networks.

Universal communication platform which preserves the user's privacy and freedoms.

Instant messaging and collaboration tool with private and group chat rooms, continuous voice and video meetings, files sharing, issue tracking with integrated task board (alternative to Slack).

Communications platform that puts data protection first (alternative to Gitter.im and Slack).

Notification infrastructure for developers.