Klangheim free plugins are awesome.

[broslinger]

They have a couple of compressors and a spring reverb for f ree. All are fantastic. I’m using their comps to track guitars and for ducking my reverb and delays.

[ElDirtySanchez]

I’m pretty sure I’ve downloaded all their freebies before but I went ahead and did it again in case. I had a chance to play with their reverb , very simple layout but sounded great on acoustic guitars.
Prior I had been using Oldskoolverb by Voxengo, it’s got a lot of options and controls but sometimes I prefer something simple.