Just so you know, I constantly update the list of #linuxaudio #plugin vendors on the website at https://linuxaudio.dev/linux-audio-developers.

Latest additions:
1. PAA Audio: https://paa-audio.de/
2. Sync Audio: https://syncaudio.io/
3. UB-DSP: https://ubdsp.com/
4. Voidstar Audio: https://voidstaraudio.com/
5. WET VST: https://wetvst.com/