There are many decent free ones out there.

Off the top of my head, Top 5 freebies conforming to list requirements of original post.

1. EQ - Depending on need, may include ReaEQ (icluded in Reapers ReaPlug package I believe), PG 10 Band, or even an oldie called A0EQ

2. Compressor - The compressor from same Reaper plugin set is nice, so are Classic Compressor and PGDynamics and PPeakLimit and TripleComp and ..

3. Reverb - Ambience (not just because it is free, this is a go to for me many times) PGReverb, Classic Reverb

4. Delay - Probably Classic delay would be first freebie I'd look for, but many other good ones are out there. I don't find myself needing one that often to really have a 'go to'. Kinda wondered why this one was listed.

5. Saturation (or whatever is your # five) - For me number 5 may be something like stereo imaging or metering .. actually PGRTA is an oft overlooked metering tool. It tells you a lot about levels and EQ at a glance so I'll go with that.




I do not work here, but the benefits are still awesome
Make your sound your own!