A lot of open-source plugins include CLAP builds.

u-he's stuff (Diva, Repro, Zebra) has CLAP builds.

As another comment mentioned, I guess FabFilter plugs support CLAP now?

It is niche but I am watching it closely as I would love to get off of Windows or MacOS and CLAP plugins often have linux support.

https://cleveraudio.org/hosts-and-plug-ins/

I use FabFilter plugins all the time.

what kind of music? I'm looking to connect with other musicians and just so happen to also be a techie on here :)