.SC45 File Extension

Project file created by SuperCard, a high-level visual authoring tool for Mac OS X; stores a data document for the SuperCard runtime and includes user interface components, scripts, and application resources; may contain multiple windows that execute a "stack" in a manner similar to Apple's HyperCard technology.

SC45 files are used for developing applications as well as presentations, teaching utilities, and other tools. SuperCard projects can be run using the free SuperCard Player, or they may be built into standalone Mac OS X applications.

NOTE: The extension ".sc45" stands for SuperCard 4.5, the first version to use the SC45 extension. Subsequent versions of the software also use the SC45 extension.