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.
VCV Rack - A cross-platform modular synthesizer.
GarageBand - GarageBand is a fully equipped music creation studio for Mac
Pure Data - Pd (aka Pure Data) is a real-time graphical programming environment for audio, video, and graphical...
Cubase - Cubase is one of the world’s most powerful music creation software packages. From first idea to finished recording, Cubase helps you to make outstanding music.
miRack - Eurorack-style modular synthesizer for iOS.