Page 2 - Microsoft Open Source Programs Office News Today : Breaking News, Live Updates & Top Stories | Vimarsana

Microsoft, in partnership with IBM, has released the source code of MS-DOS 4.00 under the open-source MIT license. This release comes a decade after Microsoft first made the source code for MS-DOS 1.25 and 2.0 available to the public through the Computer History Museum.

How did the operating system so bad it likely steered users to Linux 35 years ago come to be open-sourced now? Here's what happened.