Audacity Audio Editor GitHub

This open-source multi-track audio editor and recorder is maintained on the GitHub platform with over 12,000 stars as of 2026. Originally created by Dominic Mazzoni and Roger Dannenberg at Carnegie Mellon University in 2000, the project has evolved into one of the most popular free audio editing tools worldwide. The GitHub repository provides the source code, build system, and community contribution workflow. Key features include: multi-track editing (unlimited audio tracks with waveform visualization, mix, render, and non-destructive editing), recording (16-bit, 24-bit, and 32-bit float recording from microphone, line-in, and USB audio interfaces with real-time monitoring), effects and plugins (LADSPA, LV2, VST2, VST3, Audio Unit, and Nyquist built-in effects including noise reduction, equalization, compression, reverb, echo, pitch shift, tempo change, and amplitude normalization), import and export (WAV, AIFF, MP3, Ogg Vorbis, FLAC, AAC, WMA, and raw audio via FFmpeg), spectral analysis (spectrogram view for identifying and editing specific frequency ranges and noise profiles), envelope tool (smooth volume automation across tracks), label tracks (adding text annotations and markers for editing reference), macros and batch processing (chaining effects for automated processing of multiple files), accessibility (full keyboard navigation and screen reader support), and cross-platform (Windows, macOS, Linux including portable builds). The project transitioned from Muse Group stewardship to community-driven governance in 2023.