they use https://github.com/meetecho/janus-gateway as the webrtc backend, at least according to https://opentalk.eu/en/open-source-code-und-community. so the rust part is probably just for chat and signaling.

why not use this community? just add tags to the title: [Plant Swap] [Australia] giving away beginner friendly Hoya carnosa / porcelainflower / wax plant you can still learn about the plant and have general discussions in the comments? why split the community?

Sadly cadence seems to be dead: https://github.com/falkTX/Cadence