Novation Launchpad Mk2
Novation Launchpad Mk2 is an updated versions of the Launchpad. It introduces new features such as RGB, velocity sensitive pads, and a redesigned layout scheme.
This is the Mixxx Wiki - 
Mixxx is a free and open-source DJ software.
Manual
Hardware Compatibility
Reporting Bugs
Getting Involved
Contribution Guidelines
Coding Guidelines
Using Git
Developer Guide
Creating Skins
Contributing Mappings
Mixxx Controls
MIDI Scripting
Components JS
HID Scripting