I am working on a couple of Dubstep pieces, and I've remixed a hip hop song into dubstep. For the most part, I like Dreamstation for bass/sub+tons of synth sounds, Superwave P8 for wobble+strings, TAL NoiseMaker is EXCELLENT for wobble basses and some other things,and Super Spook Keys for a screechy synths sound. Sorry I've no links, as I'm posting from mobile; I do think these are all free, however. Here's the list again:
- Dreamstation DXi2 (usually comes with Cakewalk products, or mine, at least)
- Superwave P8
- TAL NoiseMaker
- Super Spook Keys