Unix & Linux
Q&A for users of Linux, FreeBSD and other Un*x-like operating systems
English Language & Usage
Q&A for linguists, etymologists, and serious English language enthusiasts
Русский язык
Cайт вопросов и ответов для лингвистов и энтузиастов русского языка
Meta Stack Exchange
Q&A for meta-discussion of the Stack Exchange family of Q&A websites
Super User
Q&A for computer enthusiasts and power users
Literature
Q&A for scholars and enthusiasts of literature
Code Review
Q&A for peer programmer code reviews
Philosophy
Q&A for those interested in the study of the fundamental nature of knowledge, reality, and existence
English Language Learners
Q&A for speakers of other languages learning English
Latin Language
Q&A for linguists, teachers, and students wanting to discuss the finer points of the Latin language
History of Science and Mathematics
Q&A for people interested in the history and origins of science and mathematics
Web Applications
Q&A for power users of web applications
Psychology & Neuroscience
Q&A for practitioners, researchers, and students in cognitive science, psychology, neuroscience, and psychiatry
Writing
Q&A for the craft of professional writing, including fiction, non-fiction, technical, scholarly, and commercial writing
Server Fault
Q&A for system and network administrators
TeX - LaTeX
Q&A for users of TeX, LaTeX, ConTeXt, and related typesetting systems
Photography
Q&A for professional, enthusiast and amateur photographers
Information Security
Q&A for information security professionals
Academia
Q&A for academics and those enrolled in higher education
Stack Overflow
Q&A for professional and enthusiast programmers
Mathematics
Q&A for people studying math at any level and professionals in related fields
Economics
Q&A for those who study, teach, research and apply economics and econometrics
User Experience
Q&A for user experience researchers and experts
Software Recommendations
Q&A for people seeking specific software recommendations
Software Engineering
Q&A for professionals, academics, and students working within the systems development life cycle
Physics
Q&A for active researchers, academics and students of physics
History
Q&A for historians and history buffs
Linguistics
Q&A for professional linguists and others with an interest in linguistic research and theory
Quantitative Finance
Q&A for finance professionals and academics
Retrocomputing
Q&A for vintage-computer hobbyists interested in restoring, preserving, and using the classic computer and gaming systems of yesteryear
Russian Language
Q&A for students, teachers, and linguists wanting to discuss the finer points of the Russian language
Vi and Vim
Q&A for people using the vi and Vim families of text editors
Music: Practice & Theory
Q&A for musicians, students, and enthusiasts
Sound Design
Q&A for sound engineers, producers, editors, and enthusiasts
Graphic Design
Q&A for Graphic Design professionals, students, and enthusiasts
Ask Different
Q&A for power users of Apple hardware and software
Video Production
Q&A for engineers, producers, editors and enthusiasts spanning the fields of video and media creation