Good drum machines are hard to come by in the free realm, but here’s one that does the job nicely.
The GTG DPC 3 Drum Machine is a MIDFOI controllable drum machine that lets you load your own samples.
There’s minimal control here (volume, tuning, pan and a reverb send), so Addictive Drums these ain’t.
However, with the right samples and a little care, you can get very workable sounds happening.
Freeware for Windows only.