jsAudio has released an updated version of jsCompShaper, a freeware compressor effect plug-in for Windows.
Yet another compressor, but this one has the ability to morph between soft-knee compression and waveshaping as desired. Furthermore, it provides pre-/post-emphasis filtering (similar to a side-chain filter) and a more analog-like attack than jsComp.
jsAudio jsCompShaper (GUI designed by Nick Moritz of RADO Records)
jsCompShaper is a freeware VST effect plugin for Windows (32/64bit).
More information: jsAudio