Quasi-Granulizer is not a granular synthesizer, but it works on similar principles.
Apart from the APC40 hardware the entire project is made using Max 5
After a discussion on the MaxMSP forum.
Example to display a waveform, in circle...
Drag, drop and manage multiple audio files.
Play back a sample with small selections, define position, duration, rate and grain-pause between the events by using the x/...