Microsoft open-sources “the earliest DOS source code discovered to date”

Several times in the last couple of decades, Microsoft has released source code for the original MS-DOS operating system that ...

Microsoft finally open sources DOS 1.0 - and it's so much more than the code

Want a blast from the past? Microsoft just open-sourced its very first operating system, offering a rare insight into the ...

Microsoft open-sources 86-DOS 1.00, the ancestor of Windows

The source code for 86-DOS 1.00, the OS that eventually became MS-DOS and Windows, is now available on GitHub.
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Microsoft open-sources original 86-DOS 1.00 code on GitHub

Microsoft has released the source code for 86-DOS 1.00, the 45-year-old operating system that became the foundation for MS-DOS and PC-DOS, on GitHub under the permissive MIT license. The release ...

Open source

TechRepublic covers the full range of open source software with reviews, tutorials, and advice for how to get it and integrate it into your environment.
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I tried the open-source Windows clone—here’s the good and the bad

I spent a weekend using a version of Windows that isn't Windows—an operating system that runs Windows programs but contains zero Microsoft code. ReactOS has been in development since 1998, with ...