Successfully using entirely self-hosted+federated Riot/Matrix/Jitsi/Etherpad/PeerTube to host lectures, teleconference with students, answer questions in chat, and collaboratively edit their code. Write-up is incoming. Once I take a nap.

screenshot of riot, which is a slack-like thing, with a webcam of me in the corner and an etherpad showing some code in a direct message section with a student
...and you'll make a presentation at an upcoming @KWLUG meeting, right? On the very platform you're presenting about!
oh, hang on. That was a ReTweet from But you're still invited to make that presentation!