LMMS and ACID Xpress are free music-making programs that artists can use to make dubstep tracks. Whereas LMMS is an open source project that is completely free, ACID Xpress is the tuned-down 10-track version of ACID Music Studio.
While ACID Xpress is for Windows only, LMMS is available for Windows, Mac OS X and Linux operating systems. ACID Xpress is a simpler tool that automatically adjusts the tempo and pitch. In comparison, LMMS is a more advanced application that has a compressor, a limiter and an equalizer built in to allow fine tuning. To see what musicians have created LMMS, click Showcase on the banner at the top.