CrossDJ Free
With a clear, light grey interface, CrossDJ Free looks good. There are two decks, with waveforms displayed for each. Above the decks both waveforms are shown together, so you can easily see how beats match up. There are quite a lot of controls squeezed into CrossDJ Free's interface, but they are all useful. Each deck has cue and play controls, and you can save up to six play locators for each track. Click here to download