Mixxx

Mixxx provides a full‑featured environment for live DJing with digital music files, supporting BPM and musical‑key detection, tempo‑matching sync lock, and a range of sound effects that can be chained and controlled via on‑screen knobs. It also allows turntables equipped with timecode vinyl to manipulate playback and scratch tracks, and offers a vinyl‑passthrough mode for mixing physical records into a set.

The software includes built‑in mappings for many DJ controllers and a programmable mapping system that lets users add support for any MIDI or HID device, giving hands‑on control of playback, cue points, and effects. An integrated music library with iTunes synchronization helps users organize and select tracks during a performance.

Developed by an international community of DJs and programmers, Mixxx is free, open‑source, and available for Windows, macOS, and Linux. The project is community‑driven, with contributions ranging from bug reports and feature suggestions to controller mappings, translations, and code development.