Programmers
Q&A for professional programmers interested in conceptual questions about software development
Role-playing Games
Q&A for gamemasters and players of tabletop, paper-and-pencil role-playing games
User Experience
Q&A for user experience researchers and experts
Mathematics
Q&A for people studying math at any level and professionals in related fields
Game Development
Q&A for professional and independent game developers
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
Science Fiction & Fantasy
Q&A for science fiction and fantasy enthusiasts
Physics
Q&A for active researchers, academics and students of physics
Theoretical Computer Science
Q&A for theoretical computer scientists and researchers in related fields
English Language & Usage
Q&A for linguists, etymologists, and serious English language enthusiasts
Electrical Engineering
Q&A for electronics and electrical engineering professionals, students, and enthusiasts
Database Administrators
Q&A for database professionals who wish to improve their database skills and learn from others in the community
Server Fault
Q&A for professional system and network administrators
Programming Puzzles & Code Golf
Q&A for programming puzzle enthusiasts and code golfers
Academia
Q&A for academics and those enrolled in higher education
Graphic Design
Q&A for professional graphic designers and non-designers trying to do their own graphic design
English Language Learners
Q&A for speakers of other languages learning English
The Workplace
Q&A for members of the workforce navigating the professional setting
Parenting
Q&A for parents, grandparents, nannies and others with a parenting role
Personal Finance & Money
Q&A for people who want to be financially literate