Paul Allen

Paul Allen was the co-founder whose timing and technical curiosity helped create Microsoft. He met Bill Gates at Lakeside School in Seattle, where both developed an early fascination with programming. Before Microsoft, Allen attended Washington State University, left to work as a programmer, and later joined Honeywell in the Boston area. His defining pre-company contribution was spotting the Altair 8800 on the cover of Popular Electronics in 1975 and convincing Gates that the personal computer market was arriving sooner than expected. Allen understood the hardware shift and saw that even primitive machines would need programming languages. He worked with Gates to create Altair BASIC, helping transform an idea into the company's first product. Allen's background was less publicly combative than Gates', but he brought deep technical imagination and a broad view of computing's possibilities. He helped push Microsoft into existence at the precise moment when software was ready to become a separate industry.

Paul Allen co-founded Microsoft and was crucial to its earliest technical and strategic decisions. He helped develop Altair BASIC, gave the company its original name, and participated in the operating-system opportunity that led to MS-DOS. Allen left active management in the early 1980s after being diagnosed with Hodgkin lymphoma, though he remained a major shareholder for many years. After Microsoft, he became an investor, philanthropist, sports-team owner, and backer of science, space, music, artificial intelligence, and cultural institutions through Vulcan Inc. His lasting influence on Microsoft is easy to understate because he exited daily operations early, but the company might not have existed without his ability to see the Altair as a commercial signal rather than a hobbyist curiosity. Allen represented the imaginative technical side of Microsoft's founding: the belief that small computers would become general-purpose tools if software could make them useful.