Re: Free Drum Loops?
At least in freesound.org there's plenty of free samples uploaded by their own authors. Registration is a must to download them.
Plenty of rock drum sounds in there.
Now to sequence, that's a bit harder. I don't know of too many freeware sequencers. There was one I used to work with many moons ago, it was called Tuareg 2. Don't know if it dissapeared or something. Give it a look.