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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 ...
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 ...
heise online

"My coolest code": Bill Gates publishes source code from Altair Basic

Microsoft is celebrating its 50th birthday these days, and it all started with the Altair Basic program. Bill Gates has now published its source code. 50 years after the founding of Microsoft, Bill ...
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 ...
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 ...
Macworld

Here’s the 50-year-old Microsoft source code that inspired the first Apple computer

Maybe you didn’t realize this, but Microsoft is actually older than Apple. While Apple marked its 49th anniversary earlier this week on April 1, Microsoft will celebrate its 50th anniversary on April ...