jsAudio has released an updated version of jsCompShaper, a freeware compressor VST with a built-in limiter and waveshaper.
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 (see below). The GUI was designed by Nick Moritz (RADO Records).
jsCompShaper is available for free download via jsAudio.