In addition to the aforementioned and awesome Calf stuff, here are some more links to check out:
I got a lot of plugins from this page that Brad shared in the DSP discussion thread:
Forum user Erik (I don’t know how to tag users, so I’m linking to his post) cooked up these plugins, some of which are really great:
https://forum.islainstruments.com/t/dsp-plugin-discussion/10438/189