Browse free open source Audio Conversion software and projects below. Use the toggles on the left to filter open source Audio Conversion software by OS, license, language, programming language, and project status.

  • The Voice API that just works | Twilio Icon
    The Voice API that just works | Twilio

    Build a scalable voice experience with the API that's connecting millions around the world.

    With Twilio Voice, you can build unique phone call experiences with one API, to create, receive, control and monitor calls with just a few lines of code. Create an engaging voice experience that you can quickly scale and modify with a wide array of customization options and resources.
  • Intelligent network automation for businesses and organizations Icon
    Intelligent network automation for businesses and organizations

    Network automation for the hybrid multi-cloud era

    BackBox seamlessly integrates with network monitoring and NetOps platforms and automates configuration backups, restores, and change detection. BackBox also provides before and after config diffs for change management, and automated remediation of discovered network security issues.
  • 1
    SoX is the Swiss Army Knife of sound processing utilities. It can convert audio files to other popular audio file types and also apply sound effects and filters during the conversion.
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    Downloads: 23,396 This Week
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  • 2
    LAME (Lame Aint an MP3 Encoder)

    LAME (Lame Aint an MP3 Encoder)

    A high quality MP3 encoder

    LAME is an educational tool to be used for learning about MP3 encoding. The goal of the LAME project is to improve the psycho acoustics, quality and speed of MP3 encoding. Note: we provide source code only!
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    Downloads: 16,942 This Week
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  • 3
    Freeware Advanced Audio Codec
    FAAC is an Advanced Audio Coder (MPEG2-AAC, MPEG4-AAC). The goal of FAAC is to explore the possibilities of AAC and exceed the quality of the currently best MP3 encoders. You can submit pull requests via GitHub: https://github.com/knik0/faac https://github.com/knik0/faad2
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    Downloads: 2,280 This Week
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  • 4
    The SoX Resampler library

    The SoX Resampler library

    High quality, one-dimensional sample-rate conversion library

    The SoX Resampler library `libsoxr' performs one-dimensional sample-rate conversion—it may be used, for example, to resample PCM-encoded audio. It aims to give fast and high quality results for any constant (rational or irrational) resampling ratio. Phase-response, preserved bandwidth, aliasing, and rejection level parameters are all configurable; alternatively, simple `preset' configurations may be selected. An experimental, variable-rate resampling mode of operation is also included.
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    Downloads: 3,260 This Week
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  • Field Service Management Software | BlueFolder Icon
    Field Service Management Software | BlueFolder

    Maximize technician productivity with intuitive field service software

    Track all your service data in one easy-to-use system, enabling your team to move faster and generate more revenue for your bottom line.
  • 5
    Burn

    Burn

    Simple but advanced disc burning for macOS

    Create data discs with advanced data settings. Create video and audio discs, Burn will convert if needed. Create DVD-Video discs. Recreate discs. Burn doesn't reinvent the wheel, it uses many powerful open source Unix utilities and is also open source.
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    Downloads: 2,312 This Week
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  • 6
    MAD is a high-quality fixed-point MPEG audio decoder with 24-bit output. The implementation is entirely new, based on the ISO/IEC standards, and performs especially well on systems without native floating-point support.
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    Downloads: 4,349 This Week
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  • 7
    FFmpeg Batch AV Converter

    FFmpeg Batch AV Converter

    Free all in one audio/video ffmpeg batch encoder

    FFmpeg Batch AV Converter is a free universal audio and video encoder, that allows to use the full potential of ffmpeg command line with a few mouse clicks in a convenient GUI with drag and drop, progress information. Some fancy wizards make things easy for non-experts. Thanks to its multi-file encoding feature, it may be the fastest a/v batch encoder available, since it maximizes system resources usage by launching as many simultaneous processes up to user cpu thread count. You can change encoding priority, pause and resume, set automatic shutdown. It is good for seasoned ffmpeg users as well as beginners. It provides unlimited single or multi-file batch encoding for almost any audio/video format. You can use any set of parameters and try them before starting encoding. You can multiplex streams, subtitle videos (as track and hardcoded), trim, concatenate, record screen, capture M3u8 or YouTube URLs. You can also get multimedia info.
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    Downloads: 966 This Week
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  • 8
    mp3splt

    mp3splt

    utility to split mp3, ogg vorbis and FLAC files without decoding

    mp3splt is a free utility to split mp3, ogg vorbis and FLAC files without decoding, selecting begin/end time; if file is an album, you can get splitpoints automatically from internet or a local cue, cddb file. It also splits Mp3Wrap and AlbumWrap archives. Supports splitting and trimming by silence detection. For mp3 files, both ID3v1 and ID3v2 are supported using original tags or user defined tags.
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    Downloads: 698 This Week
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  • 9
    Bauer stereophonic-to-binaural DSP

    Bauer stereophonic-to-binaural DSP

    Headphones like a loudspeakers

    The Bauer stereophonic-to-binaural DSP (bs2b) library and plugins is designed to improve headphone listening of stereo audio records. Recommended for headphone prolonged listening to disable superstereo fatigue without essential distortions.
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    Downloads: 619 This Week
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  • APIs for the next generation of business text messaging Icon
    APIs for the next generation of business text messaging

    For companies that need a reliable messaging API provider

    Get your customers’ messages where they need to go with 99%+ deliverability. Telgorithm’s API automates A2P compliance & message management for faster, easier, & more reliable messaging, enabling you to offer the best service to your customers.
  • 10
    fre:ac - free audio converter

    fre:ac - free audio converter

    Audio converter and CD ripper for various formats

    fre:ac is a free audio converter and CD ripper for various formats and encoders. It features MP3, MP4/M4A, WMA, Ogg Vorbis, FLAC, AAC, and Bonk format support, integrates freedb/CDDB, CDText and ID3v2 tagging and is available in several languages.
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    Downloads: 360 This Week
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  • 11
    AAX to MP3

    AAX to MP3

    Audible AAX to MP3 Converter

    Usage: - Install the Audible Manager and open a file of your account. - Sign in into your audible account (in the application). Now the program can convert your audible files. - Start Aax2Mp3 (AaxToMp3GUI.exe) and select the file you want to convert. - Click the Convert button. - The buttons are grayed out and it shows how far the conversion has progressed. - - The time should always continue to increase. - If the buttons are clickable again, the conversion is completed. The mp3 file is now to be found in the same folder as the AAX file. The conversion need (depending on the computing power) for 1 minute of audio approximately 2 seconds. The conversion of Aax to MP3 is fast, free, and requires no I-Tunes. Have fun while listening! If you want to help developing this software, please contact me. I do not have enough time to develop alone.
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    Downloads: 334 This Week
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  • 12
    FLAC is a free lossless compressed audio format which supports streaming and archival. The FLAC project maintains the format and provides a reference encoder/decoder and input plugins for several popular audio players.
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    Downloads: 308 This Week
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  • 13
    TTA Lossless Audio Codec
    Lossless compressor for multichannel 8,16 and 24 bits audio data, with the ability of password data protection. Being 'lossless' means that no data/quality is lost in the compression - when uncompressed, the data will be identical to the original.
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    Downloads: 230 This Week
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  • 14
    LameXP

    LameXP

    Multi-Format Audio-Encoder Front-end

    LameXP is a free multi-format audio file converter that supports a variety of output formats, including MP3, AAC/MP4, Ogg Vorbis, Opus, as well as FLAC, and an even higher number of input formats. It also supports batch processing and can utilize multiple processor cores.
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    Downloads: 275 This Week
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  • 15
    FlacSquisher

    FlacSquisher

    A utility to convert a Flac library to MP3, Opus or Ogg Vorbis format.

    FlacSquisher converts a library of Flac files to MP3, Opus, or Ogg Vorbis format, maintaining the directory structure in the original library. That way, you can maintain your Flac files for home listening, and easily convert them to MP3, Opus, or Ogg format for mobile use, where storage space is more often tightly constrained.
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    Downloads: 207 This Week
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  • 16
    Linux Studio Plugins Project

    Linux Studio Plugins Project

    Linux Studio Plugins Project

    LSP (Linux Studio Plugins) is a collection of open-source plugins currently compatible with LADSPA, LV2 and LinuxVST formats. Standalone plugins for JACK are provided since version 1.0.8. Experimental support of ARMv7 added since version 1.1.4 Experimental support of AArch64 added since version 1.1.9 Decomposition of modules and new UI introduced in 1.2.0 Added CLAP support in 1.2.5 Added VST3 support in 1.2.15 The basic idea is to fill the lack of good and useful plugins under the GNU/Linux platform. After some contributions to other open source projects the decision was made to implement separate and independent plugin distribution.
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    Downloads: 274 This Week
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  • 17
    MediaCoder

    MediaCoder

    Universal media transcoding software

    MediaCoder is a universal media transcoding software actively developed and maintained since 2005. It puts together most cutting-edge audio/video technologies into an out-of-box transcoding solution with a rich set of adjustable parameters which let you take full control of your transcoding. New features and latest codecs are added or updated constantly. MediaCoder might not be the easiest tool out there, but what matters here is quality and performance. It will be your swiss army knife for media transcoding once you grasp it.
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    Downloads: 1,065 This Week
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  • 18
    Dragon UnPACKer
    Dragon UnPACKer is a game archive (Quake PAK, etc..) unpacking tool. It is plugin based making easier to add new archive file formats. It has convert ability and raw search function for known material (audio, video and pictures).
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    Downloads: 234 This Week
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  • 19
    Media Converter
    Media Converter is a plugin based video and audio converter. It uses FFmpeg as its engine, which allows it to convert to a lot of formats.
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    Downloads: 137 This Week
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  • 20
    Medlexo

    Medlexo

    this can be downloaded and run directly

    https://medlexo.is-an.app/ Just 3mb easy and free offline video tool for lossless and super fast convert, combine and compress video. It can also merge video and audio (mp4 and m4a), convert .gif to .mp4, download m3u8 and extract audio from video.
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    Downloads: 249 This Week
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  • 21
    FLAC Frontend

    FLAC Frontend

    The new, updated front-end for FLAC!

    As Speek's celebrated FLAC Frontend hasn't been updated for 10 years, things started to get a little buggy with new Windows versions. This remake fixes most issues. FLAC Frontend is a convenient way for Windows users not used to working with command lines to use the official FLAC tools. It accepts WAVE, W64, AIFF and RAW files for encoding and outputs FLAC or OGG-FLAC files. It is able to decode FLAC files, test them, fingerprint them and re-encode them. It has drag-and-drop support too.
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    Downloads: 245 This Week
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  • 22

    File Order Randomizer

    For cheap music players: Puts random numbers in front of every file.

    If, like me, you have a car radio or a clock radio which cannot play tracks in random order from your usb stick itself, this application might be useful for you. It generates random numbers and puts them in front of every file in a specified folder. So all you've got to do when you want a new play order for your music tracks is run this application.
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    Downloads: 84 This Week
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  • 23
    Internet Friendly Media Encoder

    Internet Friendly Media Encoder

    Simple, Flexible & Powerful H.265/HEVC video encoder!

    HEVC was developed with the goal of providing twice the compression efficiency of the previous standard, H.264 / AVC. Although compression efficiency results vary depending on the type of content and the encoder settings, at typical consumer video distribution bit rates HEVC is typically able to compress video twice as efficiently as AVC. End-users can take advantage of improved compression efficiency in one of two ways (or some combination of both); IFME helps you to organized, manage queue, manage plugins, and choose compiled x265 and more! Support AviSynth natively with build-in awesome library like InterFrame & Script Editor
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    Downloads: 81 This Week
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  • 24
    Curlew Multimedia Converter

    Curlew Multimedia Converter

    Easy to use Multimedia Converter for Linux

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    Downloads: 90 This Week
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  • 25
    winLAME

    winLAME

    winLAME is an easy to use encoder for many audio formats, e.g. MP3.

    winLAME is an easy to use encoder for many audio formats, including MP3, Opus, Ogg Vorbis and more. winLAME lets you read in audio tracks from CDs or encode audio files from your hard drive. The intuitive wizard-style user interface makes it easy to set up encoding settings. Multicore CPUs are used to parallelize encoding tasks. Official GitHub project webpage: https://github.com/vividos/winLAME
    Downloads: 73 This Week
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