Mixxx is an open source DJ tool that can be useful for amateurs and professionals. This multi-platform program is loaded with features such as:
beat estimation for you to know which songs that have a better sync match;- adjust tempo without distorting music’s pitch;
- visual wave forms display;
- support for many different gears such as DJ consoles and MIDI devices;
- adjust the song’s low, mid, and high ranges;
- and more!
The UI seems simple enough to start using as soon as you install it.