Game Development
Q&A for professional and independent game developers
Science Fiction & Fantasy
Q&A for science fiction and fantasy enthusiasts
Biology
Q&A for biology researchers, academics, and students
Japanese Language
Q&A for students, teachers, and linguists wanting to discuss the finer points of the Japanese language
Computational Science
Q&A for scientists using computers to solve scientific problems
Stack Overflow
Q&A for professional and enthusiast programmers
Area 51
Q&A for proposing new sites in the Stack Exchange network
Movies & TV
Q&A for movie and TV enthusiasts
Role-playing Games
Q&A for gamemasters and players of tabletop, paper-and-pencil role-playing games
Writing
Q&A for the craft of professional writing, including fiction, non-fiction, technical, scholarly, and commercial writing
Worldbuilding
Q&A for writers/artists using science, geography and culture to construct imaginary worlds and settings
Software Engineering
Q&A for professionals, academics, and students working within the systems development life cycle
Mathematics
Q&A for people studying math at any level and professionals in related fields
Ask Ubuntu
Q&A for Ubuntu users and developers
Board & Card Games
Q&A for people who like playing board games, designing board games or modifying the rules of existing board games
Computer Graphics
Q&A for computer graphics researchers and programmers
Code Review
Q&A for peer programmer code reviews
Theoretical Computer Science
Q&A for theoretical computer scientists and researchers in related fields