Chemistry
Q&A for scientists, academics, teachers, and students in the field of chemistry
Physics
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Software Recommendations
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TeX - LaTeX
Q&A for users of TeX, LaTeX, ConTeXt, and related typesetting systems
Mathematics
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Mathematica
Q&A for users of Wolfram Mathematica
Academia
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Unix & Linux
Q&A for users of Linux, FreeBSD and other Un*x-like operating systems
Area 51
Q&A for proposing new sites in the Stack Exchange network
Stack Overflow
Q&A for professional and enthusiast programmers
Sports
Q&A for participants in team and individual sport activities
The Great Outdoors
Q&A for people who love being outdoors enjoying nature and wilderness, and learning about the required skills and equipment
Travel
Q&A for road warriors and seasoned travelers
Code Golf
Q&A for programming puzzle enthusiasts and code golfers
Graphic Design
Q&A for Graphic Design professionals, students, and enthusiasts
English Language & Usage
Q&A for linguists, etymologists, and serious English language enthusiasts
Engineering
Q&A for professionals and students of engineering
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
Physical Fitness
Q&A for physical fitness professionals, athletes, trainers, and those providing health-related needs