REALbasic is a rapid application development (RAD) environment that provides developers a marked increase in productivity over other cross-platform development tools. REALbasic 2006 runs on and creates software for Windows 98, NT, ME, 2000 and XP, Mac OS X and Linux, all from a single set of source code. REALbasic incorporates platform-specific intelligence, like user interface widgets, so software created with REALbasic looks and feels native, regardless of the development platform you created it on.