As of December 2015, some free digital music mixing programs are Mixxx, Audacity and Cross DJ Free. Mixxx has two mixing decks and four sampler decks, and supports a wide range of mixing features, including beat looping and hotcues. It is compatible with Windows, Mac OS X and Linux.
Audacity is compatible with Windows, Mac OS X and Linux. Its audio editing features let users cut, copy and mix sounds together. In addition, it supports scrubbing and seeking and allows users to play sound backwards.
Cross DJ Free offers two decks and a mixer. It is compatible with Windows and Mac OS X, and it can integrate with iTunes.