This article is about the network of collaborative Q&A sites. For the first site in the network, see Stack Overflow.
"Super User" redirects here. For a user account with special privileges, see superuser.
Stack Exchange is a network of question-and-answer (Q&A)websites on topics in diverse fields, each site covering a specific topic, where questions, answers, and users are subject to a reputation award process. The reputation system allows the sites to be self-moderating.[1] As of March 2023,[update] the three most actively viewed sites in the network are Stack Overflow (which focuses on computer programming), Unix & Linux, and Mathematics.[2]
All sites in the network are modeled after the initial site Stack Overflow which was created by Jeff Atwood and Joel Spolsky in 2008. Further Q&A sites in the network are established, defined, and eventually – if found relevant – brought to creation by registered users through a special site named Area 51.[3][4]