Apache Answer

Built by apache

A Q&A community for your product or team, where every answer is easy to find.

livekit

Built by livekit

Real-time video, audio and data infrastructure for your own apps and AI agents.

zulip

Built by zulip

Team chat organized by topic, so conversations stay readable instead of noisy.

jitsi-meet

Built by jitsi

Secure video meetings in the browser, with no account and no download needed.