Chart.js - Easy, object oriented client side graphs for designers and developers.
OnlineSequencer.net - OnlineSequencer.net is an online music sequencer that allows users to create beats and music tracks.
D3.js - D3.js is a JavaScript library for manipulating documents based on data. D3 helps you bring data to life using HTML, SVG, and CSS.
Jummbox - A modified Beepbox that have more stuff then Beepbox. It can be used just like Beepbox. The features of Jummbox is the same of Beepbox's features, but Jummbox have more stuff to offer.
Chartist.js - Chartist.JS - simple responsive charts.
AudioSauna - AudioSauna is a full-featured audio workstation for making music online.