THINK C (1988) 3 MacOS

THINK C, originally from THINK Technologies and later Symantec, was a C compiler for the Apple Macintosh. Initially released in 1986 under the name "Lightspeed C", it featured libraries and extensions useful to creating native Macintosh applications. It competed with Macintosh Programmers Workshop.

• C++ 8.x

Toast (1995) 1 Utility MacOS

Toast was a popular CD mastering and burning application for classic Apple Macintosh. It was created by Astarte, who sold it to Adaptec, and later Roxio. Adaptec sold a different program for IBM PC compatibles named CD Creator

• 4.x

Virtual PC (1996) 25 Virtualization MacOS Windows OS2 Mac OS X

Virtual PC started off originally as an x86 emulator for PowerPC Macintosh to run MS-DOS and Microsoft Windows. Connectix, the company that made it, was purchased by Microsoft. Virtual PC was then retooled into a virtualization tool for x86 systems. Microsoft discontinued Virtual PC in favor of a server-oriented virtualization product called Hyper-V.

• 2.x (Mac)
• 3.x (Mac)
• 4.x
• 5.x
• 6.x
• 7.x

VMS (1990) 1 Other

The Virtual Memory System (VMS) is an OS originally designed for the DEC VAX line of servers. Over time, the OS grew to support Alpha and Itanium based machines. Released initially in 1977, the OS was a major competitor at the time to UNIX based machines.

• 7.x
• 8.4

Watcom C/C++ (1989) 5 DOS Windows

The Watcom C/C++ is a powerful compiler for DOS, Windows, and OS/2. Its key selling point was superior cross platform support. It supported DOS, extended DOS 32-bit, Win16, Win32, and OS/2. Notably, it was used to produce the video game DOOM as a 32-bit DOS extended program.

• 11.0

WordPerfect (1983) 79 Word Processor DOS

During the late 1980's, WordPerfect was THE standard word processor for DOS based PCs in big business. Under DOS, it competed mostly against Wordstar. WordPerfect for Windows enjoyed some success in the early Windows environments, but was quickly displaced by Microsoft Word for Windows. Later Windows versions were part of Borland Office/Novell PerfectOffice/Corel Office/Corel WordPerfect Office.

• 7.x (Unix)

WordPerfect Library (1998) 2 Utility Editor PIM DOS

WordPerfect Library, introduced in 1986 and later renamed WordPerfect Office (not to be confused with Corel's Windows office suite of the same name), was a package of DOS network and stand-alone utility software for use with WordPerfect. The package included a DOS menu shell and file manager, whose macros allowed text to be moved from one program to another (for example, from WordPerfect to Calendar, and vice versa), a do-all editor, apparently that of Wordperfect 3.0, which could edit binary files as well as WordPerfect or Shell macros, calendar, and a general purpose flat file database program that could be used as the data file for a merge in WordPerfect and as a contact manager.

• 2.0