Audacity

Audacity is a free, open-source audio editor and recorder. It supports multitrack recording and editing, cutting, pasting, mixing, and non-destructive editing of audio.

It runs on Windows, macOS, and Linux and is used for editing recordings, podcasts, and music as well as general audio cleanup. It is developed by volunteers and distributed under the GNU General Public License.

• Multitrack recording and editing
• Import and export of common formats including WAV, MP3, FLAC, AIFF, and Ogg
• Built-in effects such as noise reduction, equalization, echo, and reverb
• Support for third-party plugins (VST3, Nyquist, LADSPA, LV2, and Audio Unit)
• Spectrogram view and analysis tools
• Pitch and tempo adjustment