Audacity - Audacity is a free and open-source audio production software suite that includes a surprising array of editing tools and recording systems.
MadMapper - The Mapping Software
FL Studio - Image-Line's FL Studio, now on it's 12th version, is a well-known music production suite and the most popular beat processor on the market, due no doubt to its longevity. Read more about FL Studio.
Resolume - Resolume is an application for live video performances.
Reaper - Reaper is a focused digital audio workstation (DAW) developed by Cockos. In the creation of the software, the digital audio technology company intended to make audio editing accessible to the masses.
Linux Show Player - Sound player designed for stage productions