HaloMods "Classic" Read-only Archive

Well, I recently realized that it would be nifty to have a sort of drum machine in software form. For those that may have experience in this field, what are some reliable programs that are also free?

-Thanks

Well it's not free, But it's really cheap. I use it all the time for remixes. It's really nice, I recommend it, I actually know a lot of bands that use it too.

http://www.acoustica.com/beatcraft/