Jenkins - Jenkins is an open-source continuous integration server with 300+ plugins to support all kinds of software development
ZynAddSubFX - ZynAddSubFX is an open source software synthesizer for Linux, Mac OS X and Microsoft Windows.
CircleCI - CircleCI gives web developers powerful Continuous Integration and Deployment with easy setup and maintenance.
Surge XT - Open-source subtractive-hybrid synthesizer formerly sold commercially as Vember Audio Surge.
Travis CI - Focus on writing code. Let Travis CI take care of running your tests and deploying your apps.
Qsynth - Qsynth is a simple Qt4 application wrapper for the ...