Katapult

Katapult is a very flexible mapping application for the Novation Launchpad. It allows you to map customisable multipage-layouts to the Launchpad and send the MIDI output to any application or device. It also supports bi-directional communication, meaning that your software can update the controls on the Launchpad surface.

Requirements:

If on Snow Leopard, you need minimum v10.6.2 and latest Java update from Apple.

Limitations:

All features are available in the trial, but program will lock input after 200 presses on the Launchpad, whereafter the program must be restarted. The trial is time unlimited.