Stack Overflow
2008 September 15th
Stack Overflow was created by Jeff Atwood and Joel Spolsky as part of the Stack Exchange Network to serve as a question-and-answer website for programmers. Participation on Stack Overflow was encouraged by a reputation system; users would earn points and badges based on the quality of questions asked and answers given, as determined by user votes. At the end of 2022, Stack Overflow served more than 100 million people each month.