Home Improvement
Q&A for contractors and serious DIYers
Mathematica
Q&A for users of Wolfram Mathematica
Mathematics
Q&A for people studying math at any level and professionals in related fields
Open Source
Q&A for people organizing, marketing or licensing open source development projects
Music: Practice & Theory
Q&A for musicians, students, and enthusiasts
Gardening & Landscaping
Q&A for gardeners and landscapers
History of Science and Mathematics
Q&A for people interested in the history and origins of science and mathematics
TeX - LaTeX
Q&A for users of TeX, LaTeX, ConTeXt, and related typesetting systems
Stack Overflow
Q&A for professional and enthusiast programmers
Woodworking
Q&A for professional and amateur woodworkers
The Great Outdoors
Q&A for people who love being outdoors enjoying nature and wilderness, and learning about the required skills and equipment
Motor Vehicle Maintenance & Repair
Q&A for mechanics and DIY enthusiast owners of cars, trucks, and motorcycles
Video Production
Q&A for engineers, producers, editors and enthusiasts spanning the fields of video and media creation
Ask Different
Q&A for power users of Apple hardware and software
Super User
Q&A for computer enthusiasts and power users
Electrical Engineering
Q&A for electronics and electrical engineering professionals, students, and enthusiasts
Personal Finance & Money
Q&A for people who want to be financially literate
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
Software Engineering
Q&A for professionals, academics, and students working within the systems development life cycle
English Language & Usage
Q&A for linguists, etymologists, and serious English language enthusiasts
Android Enthusiasts
Q&A for enthusiasts and power users of the Android operating system
Cross Validated
Q&A for people interested in statistics, machine learning, data analysis, data mining, and data visualization
Economics
Q&A for those who study, teach, research and apply economics and econometrics
Sound Design
Q&A for sound engineers, producers, editors, and enthusiasts
Server Fault
Q&A for system and network administrators
MathOverflow
Q&A for professional mathematicians
Law
Q&A for legal professionals, students, and others with experience or interest in law
Pets
Q&A for pet owners, caretakers, breeders, veterinarians, and trainers
Hardware Recommendations
Q&A for people seeking specific hardware recommendations
Medical Sciences
Q&A for professionals in medical and allied health fields, students of those professions, related academics, and others with a sound understanding of medicine and healthcare-related sciences
History
Q&A for historians and history buffs