Plektron has announced the release of WTComp, which is described as an analogue tube compressor. It's available for Windows as a VST effect plug-in and it is free.
WTComp is based on the parallel compression technique that maximize the output signal rather than destroy the sound's dynamic. The tube simulation makes the sound warm and loads without distortion, processing a "fat" wave without square peaks.
The advanced internal structure includes an intelligent audio-clip system.
Plektron says that it is deal for mastering and use on single tracks.