Audacity - Audacity is a free and open-source audio production software suite that includes a surprising array of editing tools and recording systems.
WavePad - This audio editing software is a full-featured professional audio and music editor for Windows and Mac.
Spek - Spek helps to analyse your audio files by showing their spectrogram.
SoX - Sound eXchange is a command line utility that can convert various formats of computer audio files...
TunePat Tidal Media Downloader - TunePat Tidal Media Downloader is a comprehensive audio downloader which supports converting Tidal music to the most popular formats, including MP3, AAC, FLAC, WAV, AIFF, or ALAC formats.
AudioMass - A full-featured web based audio editor 🎶