This is the post effects section taken from the Purple People Eater.
For use as a DAW send effect, it also works well in standalone mode, you can load in a sample and play it through the PFx and save the results to your HD as a new sample.
The PFx has the following effects: Filter Bank LFO, Compressor, Flanger Phaser, Dual Delay, Reverb Space and Auto Gain Reduction.
Price: £12 for the released version but the original, fully working, beta version is now free.
Compatible with Reaktor version 5.8.0+.