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Stack Overflow founding date

As of November 3, 2026, Stack Overflow's founding date on the AsOf record is September 15, 2008, dated September 15, 2008, from 2 secondary sources (blog.codinghorror.com and joelonsoftware.com). The record holds 1 claim on Stack Overflow's founding date, 1 still open and 0 superseded, each dated and sourced; a replaced value is closed with an end date, never deleted.

current founding date
September 15, 20082008-09-15 · 3 sources

Every dated value

1 claims · oldest first · superseded claims stay visible
valuevalid fromstatus
2008-09-15September 15, 2008
to present · conf 0.85 · 3 src for founding date 2008-09-15
2008-09-15valid

Questions this record answers

What is Stack Overflow's current founding date?
September 15, 2008, dated September 15, 2008, from 2 secondary sources (blog.codinghorror.com and joelonsoftware.com). The record asserts this claim as of November 3, 2026 (status valid, confidence 0.85).

Answered from the rows above only, as of November 3, 2026. The record has no opinions.

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