Microsoft Comic Chat is now open source
Microsoft Comic Chat, the pioneering IRC client that transformed conversations into comic-book panels and introduced Comic Sans to the world, is now open source.
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Continuing the story of early DOS development
In 2018 we (re)-open-sourced MS‑DOS 1.25 and 2.11 and in 2024 we were able to make the source for MS‑DOS 4. -
Preserving code that shaped generations: Zork I, II, and III go Open Source
Microsoft’s Open Source Programs Office (OSPO), Team Xbox, and Activision are making Zork I, Zork II, and Zork III available under the MIT License. -
Bringing BASIC back: Microsoft’s 6502 BASIC is now Open Source
For decades, fragments and unofficial copies of Microsoft’s 6502 BASIC have circulated online, mirrored on retrocomputing sites, and preserved in museum archives. -
Open sourcing MS-DOS 4.0
In partnership with IBM, we’re releasing the source code to MS-DOS 4.
Microsoft Open Source
Open Source enables Microsoft products and services to bring choice, technology and community to our customers.
