I’m a Core Developer for https://jami.net since several years now. During those years, I gave some talks and wrote a lot of articles that I’ll link of that page:

Articles

• “Improving the call experience in Jami” - 2022, Aug 31 - https://jami.net/improving-call-experience-in-jami/
• “Swarm file transfers” - 2022, Aug 09 - https://jami.net/swarm-file-transfers/
• “Synchronizing conversation history with Swarm” - 2022, Feb 16 - https://jami.net/synchronizing-conversation-history-with-swarm/
• “Swarm: a new generation of group conversations” - 2021, Jan 15 - https://jami.net/swarm-introducing-a-new-generation-of-group-conversations/
• “Improving performance and security with TLS 1.3” - 2019, Sep 6 - https://jami.net/improving-performance-and-security-with-tls-1-3/
• “Peer-to-peer file sharing support in Jami” - 2019, Jun 14 - https://jami.net/peer-to-peer-file-sharing-support-in-jami/
• “Establishing peer-to-peer connections with Jami” - 2017, Jun 9 - https://jami.net/establishing-peer-to-peer-connections-with-jami/

And probably helped to lot of other things (like https://docs.jami.net/)