Audacity is a free and open-source audio software that operates on multiple platforms, including Windows, macOS, and GNU/Linux. This user-friendly multi-track audio editor and recorder was created by a dedicated team of volunteers committed to open-source development. Users can capture live audio via a microphone or mixer, as well as digitize sounds from various media sources. The software allows for the importation, editing, and merging of audio files, and recordings can be exported in a variety of file formats, including the capability to handle multiple files simultaneously. Audacity supports audio resolutions of 16-bit, 24-bit, and 32-bit, with superior quality achieved through high-quality resampling and dithering techniques. It also accommodates effect plug-ins like LADSPA, LV2, Nyquist, VST, and Audio Unit, allowing users to modify Nyquist effects directly within a text editor or create their own plug-ins. Editing is simplified with features like Cut, Copy, Paste, and Delete, alongside unlimited Undo and Redo options for flexibility during sessions. Users can preview effects in real-time and manage their plug-ins effectively through the integrated Plug-in Manager, ensuring a smooth workflow while working on audio projects. Overall, Audacity stands out as a versatile tool for both amateur and professional audio enthusiasts.