Mathematics
Q&A for people studying math at any level and professionals in related fields
Physics
Q&A for active researchers, academics and students of physics
Chemistry
Q&A for scientists, academics, teachers and students
Biology
Q&A for biology researchers, academics, and students
Computational Science
Q&A for scientists using computers to solve scientific problems
Area 51
Stack Exchange Network staging zone, where users come together to build new Q&A sites
Cognitive Sciences
Q&A for practitioners, researchers, and students in cognitive science, psychology, neuroscience, and psychiatry
TeX - LaTeX
Q&A for users of TeX, LaTeX, ConTeXt, and related typesetting systems
English Language & Usage
Q&A for linguists, etymologists, and serious English language enthusiasts
Cross Validated
Q&A for statisticians, data analysts, data miners and data visualization experts
Ask Different
Q&A for power users of Apple hardware and software
Physical Fitness
Q&A for physical fitness professionals, athletes, trainers, and those providing health-related needs
Theoretical Computer Science
Q&A for theoretical computer scientists and researchers in related fields
Electrical Engineering
Q&A for electronics and electrical engineering professionals, students, and enthusiasts
Stack Overflow
Q&A for professional and enthusiast programmers
German Language & Usage
Q&A for speakers of German wanting to discuss the finer points of the language and translation
Computer Science
Q&A for students, researchers and practitioners of computer science
Writers
Q&A for authors, editors, reviewers, professional writers, and aspiring writers
Linguistics
Q&A for professional linguists and others with an interest in linguistic research and theory
