Role-playing Games
Q&A for gamemasters and players of tabletop, paper-and-pencil role-playing games
Science Fiction & Fantasy
Q&A for science fiction and fantasy enthusiasts
Christianity
Q&A for committed Christians, experts in Christianity and those interested in learning more
Academia
Q&A for academics and those enrolled in higher education
Physics
Q&A for active researchers, academics and students of physics
Programmers
Q&A for professional programmers interested in conceptual questions about software development
English Language & Usage
Q&A for linguists, etymologists, and serious English language enthusiasts
Parenting
Q&A for parents, grandparents, nannies and others with a parenting role
Mathematics
Q&A for people studying math at any level and professionals in related fields
Programming Puzzles & Code Golf
Q&A for programming puzzle enthusiasts and code golfers
Biology
Q&A for biology researchers, academics, and students
Game Development
Q&A for professional and independent game developers
Writers
Q&A for authors, editors, reviewers, professional writers, and aspiring writers
TeX - LaTeX
Q&A for users of TeX, LaTeX, ConTeXt, and related typesetting systems
User Experience
Q&A for user experience researchers and experts
Graphic Design
Q&A for professional graphic designers and non-designers trying to do their own graphic design
Unix & Linux
Q&A for users of Linux, FreeBSD and other Un*x-like operating systems.
Cross Validated
Q&A for statisticians, data analysts, data miners and data visualization experts
Photography
Q&A for professional, enthusiast and amateur photographers
Meta Stack Overflow
Q&A for meta-discussion of the Stack Exchange family of Q&A websites
Computational Science
Q&A for scientists using computers to solve scientific problems
Cognitive Sciences
Q&A for practitioners, researchers, and students in cognitive science, psychology, neuroscience, and psychiatry
Computer Science
Q&A for students, researchers and practitioners of computer science