Audacity is a free opensource audio editor utility which also cross platform.

Transpose is a CRM solution.

Ohm Studio is the first real-time collaborative pro DAW.

Harrison Mixbus is a digital audio workstation (DAW) software.

Audio Hijack Pro records audio from a variety of sources and gives you the tools to process it for multiple purposes.

Soundflower is a MacOS system extension that allows applications to pass audio to other applications.

Traverso DAW is a cross-platform multitrack audio recording and audio editing suite with support for CD mastering and non-linear processing.