Meta Stack Overflow
Q&A for meta-discussion of the Stack Exchange family of Q&A websites
Server Fault
Q&A for professional system and network administrators
Programmers
Q&A for professional programmers interested in conceptual questions about software development
Area 51
Stack Exchange Network staging zone, where users come together to build new Q&A sites
Physical Fitness
Q&A for physical fitness professionals, athletes, trainers, and those providing health-related needs
The Workplace
Q&A for members of the workforce navigating the professional setting
Ask Different
Q&A for power users of Apple hardware and software
Personal Finance & Money
Q&A for people who want to be financially literate
English Language & Usage
Q&A for linguists, etymologists, and serious English language enthusiasts
Game Development
Q&A for professional and independent game developers
Science Fiction & Fantasy
Q&A for science fiction and fantasy enthusiasts
WordPress Answers
Q&A for WordPress developers and administrators
Database Administrators
Q&A for database professionals who wish to improve their database skills and learn from others in the community
Stack Apps
Q&A for apps, scripts, and development with the Stack Exchange API
Mathematics
Q&A for people studying math at any level and professionals in related fields
Theoretical Computer Science
Q&A for theoretical computer scientists and researchers in related fields
TeX - LaTeX
Q&A for users of TeX, LaTeX, ConTeXt, and related typesetting systems
Reverse Engineering
Q&A for researchers and developers who explore the principles of a system through analysis of its structure, function, and operation
Programming Puzzles & Code Golf
Q&A for programming puzzle enthusiasts and code golfers
Parenting
Q&A for parents, grandparents, nannies and others with a parenting role
Graphic Design
Q&A for professional graphic designers and non-designers trying to do their own graphic design
Personal Productivity
Q&A for people wanting to improve their personal productivity