Controller (Ardour/Mixbus)
Softube Controller 1
I have created an adapter to use Softube Controller 1 in Ardour even under Linux (means without installing the Window/Mac only) Softube Software. For functionality see Using the Softube Console1
Elegato Stream Deck
There is a sophisticated Python implementation to configure and use Elegatos Stream Decks under Linux. I added a OSC-based plugin to control Ardour / Mixbus with the Stream Decks. You can find more details on the GitHUB page.