Interface Manager 0.1

Interface Manager 0.1 is the first version of the Interface Manager series, released on May 16, 1981.
Interface Manager 0.1 ran on top of Microsoft Xenix code and looked virtually similar to it, giving users a few features but nothing too snazzy. Co-founders at Microsoft pushed for its development after Xenix sold an estimated 1000 units. The system is often regarded as a front end to Xenix computers rather than a stand-alone operating system, and although it can't run Unix-based programs, it can run programs of its own.
The system received licensing from companies like Commodore, Texas Instruments, and Tandy, but was met with a poor reception from a lot of people who said it lacked any real expectations that they had.
While the system was a failure, it did have one positive: it made MS-DOS a thing, and after that, MS-DOS paved the way for Windows.
Microsoft supported the system for a total of 16 years, with support for it ending on September 30, 1997, which makes it the longest-supported version of the Interface Manager series.
Successor: Interface Manager 0.2
Category:Fictional Windows versions