TeX - LaTeX
Q&A for users of TeX, LaTeX, ConTeXt, and related typesetting systems
Mathematics
Q&A for people studying math at any level and professionals in related fields
Stack Overflow
Q&A for professional and enthusiast programmers
Computer Science
Q&A for students, researchers and practitioners of computer science
Super User
Q&A for computer enthusiasts and power users
Web Applications
Q&A for power users of web applications
Cryptography
Q&A for software developers, mathematicians and others interested in cryptography
Meta Stack Exchange
Q&A for meta-discussion of the Stack Exchange family of Q&A websites
Cross Validated
Q&A for people interested in statistics, machine learning, data analysis, data mining, and data visualization
Theoretical Computer Science
Q&A for theoretical computer scientists and researchers in related fields
Academia
Q&A for academics and those enrolled in higher education
History of Science and Mathematics
Q&A for people interested in the history and origins of science and mathematics
Philosophy
Q&A for those interested in the study of the fundamental nature of knowledge, reality, and existence