7Air has released DRX8R, a free compressor/ reverb VST effect plugin for Windows.
A new and improved interface with reverb and compression, this new effect plugin is again designed primarily for drums, but can be used also for tracking any audio source. Tested mainly in Windows 7 64bit, in my testing I used Soundforge to put it through its paces and it only used on average 1% of the cpu core.
More info: Free DRX8R VST