Super User
Q&A for computer enthusiasts and power users
Stack Overflow
Q&A for professional and enthusiast programmers
Arqade
Q&A for passionate videogamers on all platforms
Game Development
Q&A for professional and independent game developers
Software Engineering
Q&A for professionals, academics, and students working within the systems development life cycle
Software Recommendations
Q&A for people seeking specific software recommendations
Computer Graphics
Q&A for computer graphics researchers and programmers
Meta Stack Exchange
Q&A for meta-discussion of the Stack Exchange family of Q&A websites
Computer Science
Q&A for students, researchers and practitioners of computer science
Area 51
Q&A for proposing new sites in the Stack Exchange network
Raspberry Pi
Q&A for users and developers of hardware and software for Raspberry Pi
English Language & Usage
Q&A for linguists, etymologists, and serious English language enthusiasts
German Language
Q&A for speakers of German wanting to discuss the finer points of the language and translation
Mathematics
Q&A for people studying math at any level and professionals in related fields
Academia
Q&A for academics and those enrolled in higher education
Android Enthusiasts
Q&A for enthusiasts and power users of the Android operating system
Personal Finance & Money
Q&A for people who want to be financially literate
Code Golf
Q&A for programming puzzle enthusiasts and code golfers
Puzzling
Q&A for those who create, solve, and study puzzles
Seasoned Advice
Q&A for professional and amateur chefs
Music: Practice & Theory
Q&A for musicians, students, and enthusiasts
Physics
Q&A for active researchers, academics and students of physics
Unix & Linux
Q&A for users of Linux, FreeBSD and other Un*x-like operating systems