Code Golf
Q&A for programming puzzle enthusiasts and code golfers
Stack Overflow
Q&A for professional and enthusiast programmers
Code Review
Q&A for peer programmer code reviews
Chinese Language
Q&A for students, teachers, and linguists wanting to discuss the finer points of the Chinese language
Puzzling
Q&A for those who create, solve, and study puzzles
Mathematics
Q&A for people studying math at any level and professionals in related fields
Super User
Q&A for computer enthusiasts and power users
Academia
Q&A for academics and those enrolled in higher education
Board & Card Games
Q&A for people who like playing board games, designing board games or modifying the rules of existing board games
Server Fault
Q&A for system and network administrators
Meta Stack Exchange
Q&A for meta-discussion of the Stack Exchange family of Q&A websites
Software Engineering
Q&A for professionals, academics, and students working within the systems development life cycle
Vi and Vim
Q&A for people using the vi and Vim families of text editors
User Experience
Q&A for user experience researchers and experts
English Language & Usage
Q&A for linguists, etymologists, and serious English language enthusiasts
Ask Different
Q&A for power users of Apple hardware and software
Software Recommendations
Q&A for people seeking specific software recommendations
Database Administrators
Q&A for database professionals who wish to improve their database skills and learn from others in the community