Hear - Hear is a sound enhancement application for the Mac.
EarMaster - Professional software for ear training and practical music theory on Windows and Mac.
Krisp - Eliminate background noise, minimize distractions, feel more confident, and activate your communication superpower with Krisp, an AI-powered software solution for effective online meetings.
GNU Solfege - GNU Solfege is free music education software.
TimeBolt - spend less time editing video
LenMus - LenMus is a free program for learning music.