Obscurium

SugarBytes has developed an assortment of great plugins, this program should be included on that list. It's a beast. It may be overwhelming at first but it's capabilities are wonderful.

Excellent sound texture tool. It's really fun to use, and you can make some great sounds with it. Most of the time, you won't be able to go in with an extremely detailed plan in mind, but whatever you get out of a sound design session with this is going to be great no matter what.