White Noise Audio have released Doppelmangler, their new spectral resynthesizer VSTi for Windows. Doppelmangler costs $149 USD but if you buy Doppelmangler and add Additive synth to your cart, you'll get 25% off the price of Additive. A demo version is available.

With Doppelmangler you can:

• Timestretch, reverse, reorder and remix your sounds by visually redrawing their timeline.
• Apply one of 20 different nondestructive MangleFX to the spectrum of the sound. These will let you do vocoding, frequency shifting and scaling, robotizing, hybridizing and more!
• Import images (in .BMP) and convert them to sounds. Export a .WAV file as a .BMP and re-import the .BMP to get back the original sound. Now you can visually edit the spectrum of a sound on a PC.
• Morph between two sources
• Use up to 256 partials (partials are the basic components of any sound) per voice.
• Utilize a full FX section - Phaser, Chorus/Flanger/Delay and Distortion/Wavewarper.
• Modulate your sounds using time-syncable envelopes that can also be used as LFO's.