Video with lots of participants: https://jitsi.org/
Video with a few participants: https://whereby.com/
Internal chat with tech-savvy folks: https://element.io/
I still use Slack and Zoom pretty often. People already know, love, and have installed these tools. It adds significant friction to expect everyone to use the tools you want, especially if they don't share certain values around technology, or if they're slow to adapt to new user interfaces.
I wish for a videoconferencing tool that:
- Built on open standards and runs fine on browers
- Is licensed Apache 2.0, MIT, or 3-Clause BSD
- Has slick native apps across GNU/Linux, MacOS, and Windows
- "Host yourself" server that scales horizontally, allowing me to throw more servers at this
- Supports screen sharing, recording, and transcription or integration with a 3rd party service
- Has an open chat API that allows you to hook up custom bots during meetings (Zoom is lacking this feature, but it's very important to me)
- Has other APIs build into the core workflows of conferencing, not implemented as an afterthought
- Supports an operating mode up to 100 simultaneous connections of HD video and audio
I would pay $30/mo per "host seat" for a SaaS implementation of the above.