Ardour is yet another Digital Audio Workstation that lets you record, edit and mix tracks, using an interface that can be professional-enough as well as easy-to-get-used-to at the same time. Ardour can be useful for professionals such as audio engineers, musicians, sound track editors and composers. While Ardour lets audio engineers mix their MIDI projects with ease, the enhanced recording options would do well for musicians and composers. When we consider the features aspect, Ardour has a lot to talk about: support for editing hardware makes everything easier while multi track recording makes sense too. There are advanced options in the editing and mixing section too. For instance, you have Routing, Inline Plugin Control, etc in mixing section. It is to be noted that productivity of Ardour can be made to fit your requirement using certain plug-ins.
Price: Pay at least $1 for full programme features. Availability: Intel OS X 10.6 (Snow Leopard) to OS X 10.10 (Yosemite); Intel/AMD Linux (2 GB RAM is recommended)