Novation’s Launchpad, its affordable (<$200) "grid" controller, may have a big Ableton logo on it. But underneath, it's just a MIDI controller. Bi-colored LEDs, containing a red and green element for red, green, and amber output (amber = red+green), can be triggered using simple MIDI note and control messages. That means, whether you're looking forward to Max for Live or you're sequencing in a tracker or writing Processing sketches, you can use the Launchpad just like any other MIDI controller.