Audacity is a multi-track audio editor and recorder for Windows, macOS and Linux. People use it to record from a microphone or other inputs, edit and mix tracks, convert audio between formats such as WAV, MP3, FLAC and Ogg, and analyse sound in a spectrogram view. It supports plug-ins in VST3 and Nyquist formats. Audacity is a desktop application that you install and run locally; version 4 brought a redesigned interface and workspaces.
Audacity is a Muse Group brand, and Muse Group has its headquarters in Limassol, Cyprus; the software is developed together with contributors. The source code is published on GitHub under the GPL (GPLv3 for the project as a whole). Audio files are processed on your own computer. The app has update checks, on by default and switchable off, and optional error reports that you send yourself; the privacy notice names MuseCY SM Ltd. of Limassol as controller. Cloud features go through Audio.com, a separate online service that requires sign-in.