Name: streamdeck-ui
Homepage: https://timothycrosley.github.io/streamdeck-ui/
Github: https://github.com/timothycrosley/streamdeck-ui/
Reason: It makes the Elgato Stream Deck usable on Linux.
If you have not heared of it here is the homepage of the StreamDeck-Hardware:
https://www.elgato.com/en/gaming/stream-deck
OpenSource:
Yes - as far as i can tell. It uses this library:
https://github.com/abcminiuser/python-elgato-streamdeck
Thanks!