Unix & Linux
Q&A for users of Linux, FreeBSD and other Un*x-like operating systems
Mathematica
Q&A for users of Wolfram Mathematica
Stack Overflow
Q&A for professional and enthusiast programmers
TeX - LaTeX
Q&A for users of TeX, LaTeX, ConTeXt, and related typesetting systems
Physics
Q&A for active researchers, academics and students of physics
Chemistry
Q&A for scientists, academics, teachers, and students in the field of chemistry
Super User
Q&A for computer enthusiasts and power users
Computational Science
Q&A for scientists using computers to solve scientific problems
Mathematics
Q&A for people studying math at any level and professionals in related fields
Biblical Hermeneutics
Q&A for professors, theologians, and those interested in exegetical analysis of biblical texts
Academia
Q&A for academics and those enrolled in higher education
English Language Learners
Q&A for speakers of other languages learning English
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
Electrical Engineering
Q&A for electronics and electrical engineering professionals, students, and enthusiasts
Ask Different
Q&A for power users of Apple hardware and software
Space Exploration
Q&A for spacecraft operators, scientists, engineers, and enthusiasts
Politics
Q&A for people interested in governments, policies, and political processes
Christianity
Q&A for committed Christians, experts in Christianity and those interested in learning more
Meta Stack Exchange
Q&A for meta-discussion of the Stack Exchange family of Q&A websites
English Language & Usage
Q&A for linguists, etymologists, and serious English language enthusiasts
Ebooks
Q&A for ebook publishers and readers
Sound Design
Q&A for sound engineers, producers, editors, and enthusiasts
Photography
Q&A for professional, enthusiast and amateur photographers
Web Applications
Q&A for power users of web applications
Matter Modeling
Q&A for materials modelers and data scientists
Code Golf
Q&A for programming puzzle enthusiasts and code golfers
Emacs
Q&A for those using, extending or developing Emacs
Parenting
Q&A for parents, grandparents, nannies and others with a parenting role
Law
Q&A for legal professionals, students, and others with experience or interest in law
Aviation
Q&A for aircraft pilots, mechanics, and enthusiasts
The Great Outdoors
Q&A for people who love being outdoors enjoying nature and wilderness, and learning about the required skills and equipment
User Experience
Q&A for user experience researchers and experts
Graphic Design
Q&A for Graphic Design professionals, students, and enthusiasts