Published and promoted by Richard Gadsden, 179 Moss Bank Road, St. Helens Merseyside WA11 7DH. Printed / Hosted by Peak Internet, 1600 Western Blvd, Suite 180, Corvallis, OR 97333.
Server Fault
Q&A for professional system and network administrators
Board & Card Games
Q&A for people who like playing board games, designing board games or modifying the rules of existing board games
Programmers
Q&A for professional programmers interested in conceptual questions about software development
English Language & Usage
Q&A for linguists, etymologists, and serious English language enthusiasts
Meta Stack Overflow
Q&A for meta-discussion of the Stack Exchange family of Q&A websites
Politics
Q&A for people interested in governments, policies, and political processes
Area 51
Stack Exchange Network staging zone, where users come together to build new Q&A sites
User Experience
Q&A for user experience researchers and experts
Physics
Q&A for active researchers, academics and students of physics
Database Administrators
Q&A for database professionals who wish to improve their database skills and learn from others in the community
Mathematics
Q&A for people studying math at any level and professionals in related fields
Ask Different
Q&A for power users of Apple hardware and software
TeX - LaTeX
Q&A for users of TeX, LaTeX, ConTeXt, and related typesetting systems
Science Fiction & Fantasy
Q&A for science fiction and fantasy enthusiasts
Theoretical Computer Science
Q&A for theoretical computer scientists and researchers in related fields
Cross Validated
Q&A for statisticians, data analysts, data miners and data visualization experts
Stack Apps
Q&A for apps, scripts, and development with the Stack Exchange API
Role-playing Games
Q&A for gamemasters and players of tabletop, paper-and-pencil role-playing games
Writers
Q&A for authors, editors, reviewers, professional writers, and aspiring writers
Answers OnStartups
Q&A for entrepreneurs looking to start or run a new business