Stack Overflow
Q&A for professional and enthusiast programmers
Server Fault
Q&A for professional system and network administrators
Cross Validated
Q&A for statisticians, data analysts, data miners and data visualization experts
English Language & Usage
Q&A for linguists, etymologists, and serious English language enthusiasts
TeX - LaTeX
Q&A for users of TeX, LaTeX, ConTeXt, and related typesetting systems
Meta Stack Overflow
Q&A for meta-discussion of the Stack Exchange family of Q&A websites
Bicycles
Q&A for people who build and repair bicycles, people who train cycling, or commute on bicycles
Database Administrators
Q&A for database professionals who wish to improve their database skills and learn from others in the community
Geographic Information Systems
Q&A for cartographers, geographers and GIS professionals
Writers
Q&A for authors, editors, reviewers, professional writers, and aspiring writers
Area 51
Stack Exchange Network staging zone, where users come together to build new Q&A sites
