The Blockly library adds an editor to your app that represents coding concepts as interlocking blocks. It outputs syntactically correct code in the programming language of your choice. Custom blocks may be created to connect to your own application. Blockly in a browser allows web pages to include a visual code editor for any of Blockly's five supported programming languages, or your own. Blockly plugins are self-contained pieces of code that add functionality to Blockly. Blockly codelabs...
SourceSquare is a free open source scanning solution, based on Antepedia, the world's largest open source knwoledge base, including more than 1,000,000 open source projects from the main forges. SourceSquare is a free (as in free beer) and free (as in free speech, licensed under GNU Affero Public Licence V3) product, which scans a folder on your hard drive and displays a treemap that shows which part of your source code is open source.