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Bill Gates shares his original Altair BASIC source code for Microsoft's 50th anniversary — "The coolest code I've ever written"

This week, Microsoft is celebrating its 50th anniversary (officially, it'll be on April 4). We've had a lot of fun at Windows Central recapping some of the best and worst moments alongside missed ...
Hackaday

Finally, An Open Source Calculator

Microsoft has released the code for the Calculator app. This move is the latest in Microsoft’s efforts to capitalize on the Open Source community. Previous efforts have been the Open Sourcing of an ...
GIGAZINE

Microsoft open-sources the source code for Bill Gates' 48-year-old '6502 BASIC'

Microsoft released the source code for ' Microsoft BASIC for 6502 Microprocessor - Version 1.1 ' as open source on September 3, 2025. While the 6502 BASIC source code had previously been distributed ...
Ars Technica

Microsoft open-sources Bill Gates’ 6502 BASIC from 1978

On Wednesday, Microsoft released the complete source code for Microsoft BASIC for 6502 Version 1.1, the 1978 interpreter that powered the Commodore PET, VIC-20, Commodore 64, and Apple II through ...
TechSpot

Bill Gates releases the source code for Microsoft's first product, Altair BASIC

In a nutshell: Microsoft, founded by Bill Gates and Paul Allen in April 1975, is celebrating its 50th anniversary this month. To mark the occasion, Gates has released the source code he and Allen ...
TechRepublic

Microsoft’s Historic 6502 BASIC Code is Now Open Source

Microsoft’s Historic 6502 BASIC Code is Now Open Source Your email has been sent Microsoft has officially released the code for its 6502 BASIC version under an open ...
Computerworld

Bill Gates’ early BASIC code for MOS 6502 released as open source

Microsoft has released the source code for the BASIC version it developed in 1976 for the MOS 6502 processor, a central component of many early home computers, The Register reports. As far back as ...