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Q&A for meta-discussion of the Stack Exchange family of Q&A websites
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Q&A for professional programmers interested in conceptual questions about software development
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Stack Exchange Network staging zone, where users come together to build new Q&A sites
Server Fault
Q&A for professional system and network administrators
Unix & Linux
Q&A for users of Linux, FreeBSD and other Un*x-like operating systems.
Science Fiction & Fantasy
Q&A for science fiction and fantasy enthusiasts
English Language & Usage
Q&A for linguists, etymologists, and serious English language enthusiasts
Ask Different
Q&A for power users of Apple hardware and software
User Experience
Q&A for user experience researchers and experts
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Q&A for apps, scripts, and development with the Stack Exchange API
Game Development
Q&A for professional and independent game developers
Photography
Q&A for professional, enthusiast and amateur photographers
Board & Card Games
Q&A for people who like playing board games, designing board games or modifying the rules of existing board games
Signal Processing
Q&A for practitioners of the art and science of signal, image and video processing
Musical Practice & Performance
Q&A for musicians, students, and enthusiasts
Graphic Design
Q&A for professional graphic designers and non-designers trying to do their own graphic design
Answers OnStartups
Q&A for entrepreneurs looking to start or run a new business
Programming Puzzles & Code Golf
Q&A for programming puzzle enthusiasts and code golfers