Realmac Software today released Button Builder 4.0, a new version of its software that allows users to create buttons for the Web, Multimedia and FileMaker projects. Button Builder 4.0, which was re-written in Cocoa, offers color overlay, smooth drop shadows, smooth scaling, export to PNG, multi-document support, and text and button transparency. Button Builder requires Mac OS X 10.3 or later and is priced at US$19.95.