Deejaysystem vs Mixxx

Deejaysystem is a Windows series of digital audio and video mixer applications for DJs and VJs working with live or automated sessions. Audio Mk2 provides two independent audio decks for live mixing and automated playback. Video VJ2 handles movies, music videos, karaoke, and audio files, and can play two videos in a DJ-style setup. Its video controls include a crossfader with six effects, multiple screens, and up to two live cameras at once. AutoPlay can choose tracks without repeats, mix the current track with the next, and adjust fade-in and fade-out volumes. Users can control the software with a keyboard, joystick, or MIDI-compatible controller and customize mappings. The free Mk-I plan is unrestricted and fully functional, but limited to one deck and one soundcard. Paid Audio Mk2 costs €59, paid once; Video VJ2 costs €149, paid once. Applicable taxes are not included. Their evaluation copies stop after 30 minutes and must be restarted to continue.

Mixxx is free DJ software for performing live mixes with digital music files on Linux, macOS and Windows. It is designed for both people starting with a laptop and experienced turntablists. Four decks provide scratchable scrolling waveforms and whole-song overview waveforms. Mixing controls include beat looping, Sync Lock, hotcues, beat rolls, censor and quantization. Mixxx supports FLAC, WAV, AIFF, MP3, M4A/AAC, Ogg Vorbis and Opus files. It works with MIDI and HID controllers, programmable JavaScript mappings and timecode vinyl control, and can load up to 64 sampler decks. Local music libraries from iTunes, Traktor, Banshee, Rekordbox, Rhythmbox and Serato can be read. Mixxx records mixes in WAV, FLAC and Ogg Vorbis, with MP3 optional, and streams through Shoutcast or Icecast servers. The full version costs nothing, with donations optional and no official paid or pro version. Its source code is published under the GNU GPL v2 or later. The application does not require an account or use telemetry. Beta and development snapshots are not intended for live use and may crash.