Microsoft just released the source code for 86-DOS 1.00, made available as an open-source project on GitHub. The release ...

This is a rare look at the tech giant's first operating system ...

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

Antiques code show Microsoft has released the source for another of its relics. This time, it's 86-DOS 1.00 getting the open ...

Microsoft today announced the release of the source code for he 86-DOS 1.00 kernel, which is among the earliest code for what ...

Microsoft has open-sourced another bit of computing history this week: The company teamed up with IBM to release the source code of 1988’s MS-DOS 4.00, a version better known for its unpopularity, ...

As the forerunner to the graphical user interfaces in Microsoft’s Windows platform, MS-DOS helped set the stage for the company’s dominance in the PC software market. When MS-DOS was released in 1981, ...

A decade after releasing the source code for MS-DOS 1.1 and MS-DOS 2.0, Microsoft has open sourced a (slightly) more recent operating system: MS-DOS 4.0. First released in 1988, you can now download ...

Following on from officially open sourcing MS-DOS 4.0 back in 2024, Microsoft have announced more early DOS code has been ...

TL;DR: Microsoft will likely never release the original source code of Windows into the wild, but the company is clearly interested in sharing important episodes of its software development history.

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In context: Back in 1980, Tim Paterson was creating a new operating system he called QDOS or Quick and Dirty Operating System. The system was later renamed 86-DOS, as it was being designed to run on ...