Audacity is a free, opensource, easy-to-use, multi-track audio editor and recorder. The interface is translated into many languages. Audacity is developed by a group of volunteers and distributed under the GNU General Public License (GPL). Since Audacity is opensource you can download its code check it, understand it and can make improvements to it. Audacity made audio editing really simple and easy. Audacity is a simple tool anyone can master and can gets the job done really quickly.
Audacity was started in the fall of 1999 by Dominic Mazzoni and Roger Dannenberg at Carnegie Mellon University and was first released on May 28, 2000 as version 0.8. As of 10 October 2011, it was the 11th most popular download from SourceForge, with over 76.5 million downloads and now the downloads are over 84,084,150. Audacity won the SourceForge 2007 and 2009 Community Choice Award for Best Project for Multimedia.You can check the latest stat reports here.




Supported Operating Systems: Windows, Mac OS X, GNU/Linux and other operating systems.
Multilingual Support : It supports 35 languages
  • Arabic 
  • Chinese (simplified) 
  • Chinese (traditional) 
  • Czech 
  • Danish 
  • Dutch 
  • English 
  • Finnish 
  • French 
  • German 
  • Greek 
  • Hungarian 
  • Irish 
  • Italian 
  • Japanese 
  • Polish
  • Portuguese 
  • Romanian 
  • Russian 
  • Spanish 
  • Swedish 
  • Turkish 
  • Ukrainian 
  • and many others
Licensed: GNU General Public License version 2.0 (GPLv2)
Import and export: WAV, AIFF, AU, FLAC and Ogg Vorbis files.
Supported File Formats:
  • WAV (Windows Wave format)
  • AIFF (Audio Interchange File Format)
  • Sun Au / NeXT, RCAM (Institut de Recherce et Coordination Acoustique / Musique)
  • MP3 (MPEG I, layer 3)
  • Ogg Vorbis
  • Audacity Project format (AUP). 
Audacity's key features:
  • Importing and exporting of WAV, AIFF, MP3, OGG Vorbis, and all file formats supported by libsndfile library. Also supports Free Lossless Audio Codec (FLAC), WMA, AAC, AMR and AC3.
  • Recording and playing back sounds.
  • Easy editing via cut, copy, and paste, with unlimited levels of undo.
  • Multitrack mixing.
  • A large array of digital effects and plug-ins.
  • Built-in LADSPA plug-in support.
  • Amplitude envelope editing.
  • Noise removal based on sampling the noise to be removed.
  • Audio spectrum analysis using the Fourier transform algorithm.
  • Support for multi-channel modes with sampling rates up to 96 kHz with 32 bits per sample
  • Adjusting audio pitch while maintaining speed

Official Website: Audacity
Sourceforge page: Audacity


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