Lily : A browser-based, visual programming environment written in JavaScript

Lily is an Open Source, browser-based, visual programming environment written in JavaScript. Lily enables users to build programs graphically by connecting functional modules to fetch and direct the flow of data, play sound or video, add interactivity or display results. Lily programs can be shared with other Lily users, installed as Firefox add-ons, run as standalone apps using XULrunner, or (with some limitations) be embedded in a web page.