Ah you mentioned Wire. I remember, Wire is free software recommended by the FSF[1] aside from Signal and is capable of doing video conference[2]. I knew Wire before GNU Ring (now Jami) but never tried it with another person. Thanks bobandrew. How about it, anatom?
Personally, I use Telegram for my online course since 2017 and everything goes well with text & pictures. With Telegram I can run more than 80 public courses with 1000 more audience (all Indonesians) up to today. It cannot do video conference at the moment but it can do voice call (one on one) and for my case the voice quality is good and it's already real to do relaxed chat. [1] https://directory.fsf.org/wiki/Collection:High_Priority_Projects [2] https://wire.com
