Originally a front end for the Digitech JamMan looping pedal; evolved into a loop library manager with various extra features.

Loopt screenshot

It has special functionality for dealing with the JamMan memory format.

It contains a script for downloading files from the iPhone app Everyday Looper. That script is available standalone here.

The mixer lets you hear the loops in different combinations:
Loopt mixer

The sequencer lets you arrange a series of loops sequentially and save as a longer composition:
Loopt sequencer

There's a brief manual and lots of tooltips.

Download here.

NR 2012.