Open Source JavaScript Audio Editing Software

LosslessCut aims to be the ultimate cross platform FFmpeg GUI for extremely fast and lossless operations on video, audio, subtitle and other related media files. The main feature is lossless trimming and cutting of video and audio files, which is great for saving space by rough-cutting your large video files taken from a video camera, GoPro, drone, etc. It lets you quickly extract the good parts from your videos and discard many gigabytes of data without doing a slow re-encode and thereby losing quality. Or you can add a music or subtitle track to your video without needing to encode. Everything is extremely fast because it does an almost direct data copy, fueled by the awesome FFmpeg which does all the grunt work. Lossless merge/concatenation of arbitrary files (with identical codecs parameters, e.g. from the same camera). Lossless stream editing: Combine arbitrary tracks from multiple files (ex. add music or subtitle track to a video file).

**kern files is a music representation format used by the Humdrum project. There are more than 100,000 **kern files of music compositions freely available on the internet. The Verovio JavaScript Toolkit Library allows you to render and display these files on any browser. This is a user interface to this library which can run on most systems.

Transform pure innocent audio files, speech, music, etc into unholy demonic abominations. Audio Satanifier 666 is a fun easy-to-use browser-based tool forged in the pits of hell, for voice actors, musicians, sound designers, for memes, for creative projects or anyone else who want to twist their sound into something absolutely diabolical! Layperson friendly - you'll be able to apply cool effects to your audio file even if you know nothing about audio engineering. Theres also a Mini version that has a voice deepening that doesn't slow the speed of the audio. Its more focused on the "satan voice" filter, while the larger default version has 16 different filters you can mix and match. (Source code is included within the html file itself.)

Kompoo is a web application allowing a music band to compose collaboratively a song. You can upload some samples, and drag & drop this on a line which correspond to a musician.

Version 3.x available here on SourceForge has been superseded by version 4.x available on Github. The later is a port to JavaScript, PHP and Ruby - all dependencies on Flash have been removed, as well as some of the functionality it provided. Version 3.x --------------- Extensible Flash and PHP online video editor with effects, transitions, titling, timeshifting and compositing. Client side ActionScript provides a robust GUI that interacts with PHP through simple XML protocols for saving edit decision lists, handling uploads and asset searching. XML is also used to describe the GUI itself as well as its underlying functionality - there is no need to recompile the Flash applets! But if you so desire then custom fonts, effects and widget classes can be written in AS3 - PixelBender support too, for effects and transitions. http://www.moviemasher.com

OMS is used for sequencing events on a timeline, allowing control of software and hardware for music, video, and demoscene productions. It is fairly similar to trackers, which are music editors, famous for their use in games and demoscene productions.

Pumilio is a web-based sound analysis and archive system for almost any kind of sound file with tools to see the spectrogram of the sound, select regions for further analysis and insertion in a database, filtering, and many other manipulations.

Very Powerfull Crossplatform [Advanced] Music Note Editor [STILL PLANING,DONT DOWNLOAD IT] Qt based project Strong plugin system that can dynamicly connect to all types of application using specified drivers,even JS plugins. Strong editor host provided and shared with all plugins. Allow to import or export files and sounds to all type of music files using dynamic plugins,basically added GuitarPro,... Allow users to use multiple output and input devices such as Internal MIDI System,ISDB Instrument Sound Database,DirectX MIDI IO,... Provides a powerfull API for plugins and other devices to use. Includes over 50 usefull internal plugin. Internal amplifier known as RoNOTE/Amplifier project that can import to other applications. RoNOTE has its special proccess models that speedup the application very much. Thanks...

SINE Isochronic Entrainer is a Free and Open Source Brainwave Entrainment application for PC, Android, and HTML5. Brainwave Entrainment is the practice of using sounds, visual stimuli or even electromagnetic fields to alter the frequency of brainwaves. It can be done for several reasons: people with insomnia can take great benefit from it, but it can also be used to improve your attention span, and even simulate the effects of some recreational drugs. The effect is not permanent, and fades away in less than a minute after the stimuli is removed. Isochronic tones are a commonly used aural stimuli for Brainwave Entrainment, consisting of short pulses of a sine wave, varying in frequency. Unlike binaural beats, isochronic tones can be played on speakers. The Player supports touchscreens and high resolution displays. Includes a graphical editor for making presets, with a manual.

A Linux web based editor librarian for the Akai S3200 sampler using lakai (another sourceforge project) to transports programs and samples to the sampler via SCSI.

Online music publishing system that enables mass collaboration among registered users. Users will submit pieces of work for others to add and edit to create other renditions of the work.

Nice gui desktop application for tagging your mp3s