Reverb is offering their complete collection of reverb drum machines for free. Download is 1.4GB.
It's basically 53 analog drum machines in digital format.
e.g. Sample:
3 Clap
8 Crash
13 Hat
55 Kick
7 Ride
3 Rim Shot
54 Snare
57 Tom
4 Loops
So if you're a musician you can add these to whatever software you use to produce music.