"Bidule is a realtime modular creation studio aimed mainly at artists seeking a new creative environment to experiment with. With Bidule, you create your own live music creation environment, inserting audio and midi devices, VST instruments and plugins. Patching them anyway you like, in realtime, while it plays."

Bidule has tons of modules of its own. High level Bidules such as Step Sequencer, Loop Player, etc. and also low level ones like Math function, FFT using the phase vocoder, FIR, Delay line, etc.