Except it didn’t. MS-DOS took over the word and led — eventually — to the huge number of Windows computers we know today. Microsoft has released the source code to MS-DOS 1.25 and 2.0 on GitHub.

But I wasn't using it. Instead, I, like virtually every office worker in the world, was using an IBM PC (or a clone) and running MS-DOS, Microsoft's character-based operating system on which we ran ...

Microsoft has announced that it is open sourcing MS-DOS 4.0, in collaboration with IBM, who developed portions of the code. It will be available under the MIT license. This came about because an ...