I didn’t find a thread for Spitfire in general or Labs in particular, so here goes - they’ve just upgraded their Labs program, created a native app with all their libs in one place and options to download and play them from the stand-alone application, as well as added some premium content for subscription if you wanna take it one step further.
I’ve used Spitfire stuff since I went Logic, and the free content in Labs really is stellar. Most of the time, you don’t need more than a patch or two from this place. Highly recommended -