Ranked in these QuestionsQuestion Ranking
Pro Open source
Ardour is open source, so it can be downloaded and modified without restriction.
Pro Clean linear interface
Pro Compatible with Linux, Windows 7/8.1/19 and OS X
Pro Free version with minimal limitations
Unlike some other DAW's which often limit saving, exporting, or advanced features, Ardour permits you to try all the features for free, with the only limitation being ten minutes of project length maximum.
Con Not user friendly
Ardour is very difficult to install and use.
Con No support for VST plugins for OS X
Plugins can be used on OS X only if they are downloaded in AU format, which is supported.
Con Missing compatibility
Ardour isn't compatible with Windows.