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.