Board & Card Games
Q&A for people who like playing board games, designing board games or modifying the rules of existing board games
Stack Overflow
Q&A for professional and enthusiast programmers
Area 51
Stack Exchange Network staging zone, where users come together to build new Q&A sites
Physics
Q&A for active researchers, academics and students of physics
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
Science Fiction & Fantasy
Q&A for science fiction and fantasy enthusiasts
Bicycles
Q&A for people who build and repair bicycles, people who train cycling, or commute on bicycles
Game Development
Q&A for professional and independent game developers
Server Fault
Q&A for professional system and network administrators
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
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
German Language & Usage
Q&A for speakers of German wanting to discuss the finer points of the language and translation
Programming Puzzles & Code Golf
Q&A for programming puzzle enthusiasts and code golfers
