Mr Alias

Mr. Alias Pro is a fully professional software synthesizer which exploits the properties of digital audio to achieve extremely bad sounds.

It is an essential instrument for the digital purist, building on Mr. Alias 2 and adding some professional features.

Mr. Alias Pro is available as a VST plugin for Windows (32-bit) and Mac OS X (and Linux, if anyone ever asks), and as an Audio Unit for Mac OS X.

Exclusive features in Mr. Alias Pro include:
Better-sounding "Pro" GUI with realistic wood sides
Skinnable
Auto Randomizer
Integrated MIDI keyboard - play with mouse or QWERTY keys (right-click to hold a note)
Modulation of internal parameters from audio input, envelopes, etc
Extra assignable envelope and two LFOs
Glide and Retrigger for legato playing in Mono mode
Set each oscillator to a constant pitch, ignoring MIDI note value
2 more banks of patches
Drawable waveforms (also load/save wav files)
And much more! (not really)