IBM TopView
TopView is the first object-oriented, multitasking, and windowing, personal computer operating environment for PC DOS developed by IBM, announced in August 1984 and shipped in March 1985. TopView provided a text-mode (although it also ran in graphics mode) operating environment that allowed users to run more than one application at the same time on a PC. IBM demonstrated an early version of the product to key customers before making it generally available, around the time they shipped their new PC AT computer.
A typical TopView session | |
| Developer | IBM |
|---|---|
| Working state | Discontinued |
| Source model | Closed source |
| Initial release | March 1985 |
| Latest release | 1.12 / April 2, 1987 |
| Marketing target | Business |
| Platforms | x86, (DOS 2.0 – 6.0) |
| Default user interface | Text-based (text mode) |
| License | Proprietary |
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