Web Audio Studio : Visualize and debug Web Audio graphs
Write Web Audio API code and instantly see the graph it creates.
Inspect signal flow, tweak parameters, and hear ...
DERI Pipes : Inspired by Yahoo's Pipes, DERI Pipes is an engine and graphical environment for general Web Data transformations and Mashup.
Browser Calories : The easiest way to measure your performance budget.
Turn websites into structured APIs from your browser in seconds