AudioMass ~ Opensource Web Audio Editor


AudioMass lets you record, or use your existing audio tracks, and modify them by trimming, cutting, pasting or applying a plethora of effects, from compression and paragraphic equalizers to reverb, delay and distortion effects. AudioMass also supports more than 20 hotkeys combinations and a dynamic responsive interface to ensure ease of use and that your productivity remains high. it is written solely in plain old-school javascript, weights approximately 65kb and has no backend or framework dependencies.

  • Loading Audio, navigating the waveform, zoom and pan
  • Visualization of frequency levels
  • Peak and distortion signaling
  • Cutting/Pasting/Trimming parts of the audio
  • Inverting and Reversing Audio
  • Exporting to mp3
  • Modifying volume levels
  • Fade In/Out
  • Compressor
  • Normalization
  • Reverb
  • Delay
  • Distortion
  • Pitch Shift
  • Keeps track of states so you can undo mistakes
  • Offline support!

audiomass.co

Cocoa Delay ~ Warm Lively Delay


Cocoa Delay is a free, open-source delay plugin in VST format. It focuses on clean design, easy operation, and a warm, lively sound.

Notable features:

  • Delay time drift, for giving the wet signal a slight wow / flutter effect
  • Adjustable wet level ducking based on the input signal
  • Static, ping-pong, and circular pan modes
  • Drive section based on open-source Airwindows saturation code

cocoa delay

tesselode.itch.io/cocoa-delay
github.com/tesselode/cocoa-delay