Descript - Text-based audio editor and automated transcription
projectM - projectM is an LGPL'ed reimplementation of Milkdrop under OpenGL.
Perfect Recall - Record and share bite-size clips from your Zoom calls
Magic Music Visuals - Fully-customizable and highly responsive visuals for live and recorded audio & MIDI.
Slid - Capture knowledge from online videos, courses, and webinars
Kauna - Kauna is a music visualizer. Kauna renders any sound reproduction in system.