Audacity - Audacity is a free and open-source audio production software suite that includes a surprising array of editing tools and recording systems.
Tenacity - Tenacity is an easy-to-use, privacy-friendly, FLOSS, cross-platform multi-track audio editor/recorder for Windows, macOS, Linux and other operating systems.
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.
AudioMass - A full-featured web based audio editor 🎶
Reaper - Reaper is a focused digital audio workstation (DAW) developed by Cockos. In the creation of the software, the digital audio technology company intended to make audio editing accessible to the masses.
Sneedacity - Sneedacity is a libre, open-source, and privacy-respecting fork of Audacity.