XDA Developers on MSN

Microsoft open-sources MS-DOS 1.0, offering a rare look at PC history

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

Microsoft makes 86-DOS 1.00 open source on its 45th birthday

History painstakingly preserved.

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

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

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

For students of early PC history, this isn’t even the first piece of 86-DOS history that has been newly rediscovered this ...
Neowin

A quick look back at Microsoft's first computer operating system, Xenix

Long before Windows, and even before MS-DOS, Microsoft sold a Unix-based operating system it called Xenix in 1980. It was the first OS made by the company, but it eventually sold it off in 1987. On ...

The Nostalgic Software That Made Microsoft Huge Is Now Open Source For Anyone To Use

The software that helped build Microsoft into what it is today has been open-sourced on GitHub. The release marks 45 years ...
InfoQ

Microsoft and IBM Release MS-DOS 4.0’s Source Code under the MIT License

Unlock the full InfoQ experience by logging in! Stay updated with your favorite authors and topics, engage with content, and download exclusive resources. Dany Lepage discusses the architectural ...

Microsoft releases the earliest DOS source code ever discovered as open source

Microsoft has officially released another significant piece of DOS history. The "Paterson Listings" include the earliest ...