Classic Mac OS-only software made by Apple Inc.

HyperCard is a software application and development kit for Apple Macintosh and Apple IIGS computers. It is among the first successful hypermedia systems predating the World Wide Web.

MacPaint is a raster graphics editor developed by Apple Computer and released alongside the original Macintosh personal computer on January 24, 1984. It was sold bundled with its word processing counterpart, MacWrite, for US$195. MacPaint was notable because it could generate graphics that could be used by other applications. It taught consumers what a graphics-based system could do by using the mouse, the clipboard, and QuickDraw picture language. Pictures could be cut from MacPaint and pasted into MacWrite documents.

Cyberdog is a discontinued OpenDoc-based Internet suite of applications, developed by Apple Computer for the Mac OS line of operating systems. It was introduced as a beta in February 1996 and abandoned in March 1997. The last version, Cyberdog 2.0, was released on April 28, 1997. It worked with later versions of System 7 as well as the Mac OS 8 and Mac OS 9 operating systems.

MacWrite is a discontinued WYSIWYG word processor released along with the first Apple Macintosh systems in 1984. Together with MacPaint, it was one of the two original "killer applications" that propelled the adoption and popularity of the GUI in general, and the Mac in particular.

MacDraw is a discontinued vector graphics drawing application released along with the first Apple Macintosh systems in 1984. MacDraw was one of the first WYSIWYG drawing programs that could be used in collaboration with MacWrite. It was eventually adapted by Claris and, in the early 1990s, MacDraw Pro was released with color support. MacDraw was the vector-based cousin of MacPaint.

MultiFinder is an extension for the Apple Macintosh's classic Mac OS, introduced on August 11, 1987 and included with System Software 5. It adds cooperative multitasking of several applications at once – a great improvement over the previous Macintosh systems, which can only run one application at a time. With the advent of System 7, MultiFinder became a standard integrated part of the operating system and remained so until the introduction of Mac OS X.

SimpleText is the native text editor for the Apple classic Mac OS. SimpleText allows text editing and text formatting (underline, italic, bold, etc.), fonts, and sizes. It was developed to integrate the features included in the different versions of TeachText that were created by various software development groups within Apple Computer.