https://asb2m10.github.io
https://www.audiothing.net/
https://github.com/DISTRHO/
https://dsp56300.wordpress.com/
https://www.fullbucket.de/
https://www.octasine.com
https://lsp-plug.in/
https://www.martinic.com/
https://nakst.gitlab.io/
https://punklabs.com/
https://surge-synthesizer.github.io/
https://tal-software.com/
https://thewavewarden.com/
https://u-he.com/
CLAP public previews available on the KVR Forum. See also u-he's post on CLAP.
https://vst.unplug.red
https://vcvrack.com/
https://vital.audio/
https://m8geil.de/
https://www.zamaudio.com/