The sound-tinkerers among you will be pleased to learn that Ardour 6.0 is out, representing a major upgrade of the open-source digital audio workstation for Linux, macOS and Windows.
Ardour is a full-featured audio mixer and editor with unlimited tracks and non-destructive editing, patching and routing, video sync for soundtracks, and plugin support for AudioUnits on macOS, VST on Windows and Linux, and LV2 on all platforms.