Meta Stack Exchange
Q&A for meta-discussion of the Stack Exchange family of Q&A websites
Open Source
Q&A for people organizing, marketing or licensing open source development projects
Area 51
Q&A for proposing new sites in the Stack Exchange network
Server Fault
Q&A for system and network administrators
Science Fiction & Fantasy
Q&A for science fiction and fantasy enthusiasts
Software Engineering
Q&A for professionals, academics, and students working within the systems development life cycle
Super User
Q&A for computer enthusiasts and power users
Ask Different
Q&A for power users of Apple hardware and software
Photography
Q&A for professional, enthusiast and amateur photographers
Music: Practice & Theory
Q&A for musicians, students, and enthusiasts
English Language Learners
Q&A for speakers of other languages learning English
English Language & Usage
Q&A for linguists, etymologists, and serious English language enthusiasts
Information Security
Q&A for information security professionals
Cross Validated
Q&A for people interested in statistics, machine learning, data analysis, data mining, and data visualization
Web Applications
Q&A for power users of web applications
Unix & Linux
Q&A for users of Linux, FreeBSD and other Un*x-like operating systems
Mi Yodeya
Q&A for those who base their lives on Jewish law and tradition and anyone interested in learning more
Home Improvement
Q&A for contractors and serious DIYers
Database Administrators
Q&A for database professionals who wish to improve their database skills and learn from others in the community
MathOverflow
Q&A for professional mathematicians
Aviation
Q&A for aircraft pilots, mechanics, and enthusiasts
French Language
Q&A for students, teachers, and linguists wanting to discuss the finer points of the French language
History of Science and Mathematics
Q&A for people interested in the history and origins of science and mathematics
Gardening & Landscaping
Q&A for gardeners and landscapers
Law
Q&A for legal professionals, students, and others with experience or interest in law
Personal Finance & Money
Q&A for people who want to be financially literate
Physical Fitness
Q&A for physical fitness professionals, athletes, trainers, and those providing health-related needs
German Language
Q&A for speakers of German wanting to discuss the finer points of the language and translation
Arqade
Q&A for passionate videogamers on all platforms
Linguistics
Q&A for professional linguists and others with an interest in linguistic research and theory
Chinese Language
Q&A for students, teachers, and linguists wanting to discuss the finer points of the Chinese language
Literature
Q&A for scholars and enthusiasts of literature
Software Quality Assurance & Testing
Q&A for software quality control experts, automation engineers, and software testers
Pets
Q&A for pet owners, caretakers, breeders, veterinarians, and trainers
Biology
Q&A for biology researchers, academics, and students
Stack Apps
Q&A for apps, scripts, and development with the Stack Exchange API
Motor Vehicle Maintenance & Repair
Q&A for mechanics and DIY enthusiast owners of cars, trucks, and motorcycles
Bicycles
Q&A for people who build and repair bicycles, people who train cycling, or commute on bicycles
Mathematics Educators
Q&A for those involved in the field of teaching mathematics
Video Production
Q&A for engineers, producers, editors and enthusiasts spanning the fields of video and media creation
Android Enthusiasts
Q&A for enthusiasts and power users of the Android operating system
WordPress Development
Q&A for WordPress developers and administrators
Worldbuilding
Q&A for writers/artists using science, geography and culture to construct imaginary worlds and settings
Raspberry Pi
Q&A for users and developers of hardware and software for Raspberry Pi
Mathematics
Q&A for people studying math at any level and professionals in related fields
Space Exploration
Q&A for spacecraft operators, scientists, engineers, and enthusiasts
Role-playing Games
Q&A for gamemasters and players of tabletop, paper-and-pencil role-playing games
User Experience
Q&A for user experience researchers and experts
Emacs
Q&A for those using, extending or developing Emacs
Theoretical Computer Science
Q&A for theoretical computer scientists and researchers in related fields
Retrocomputing
Q&A for vintage-computer hobbyists interested in restoring, preserving, and using the classic computer and gaming systems of yesteryear
Physics
Q&A for active researchers, academics and students of physics
The Workplace
Q&A for members of the workforce navigating the professional setting
Code Golf
Q&A for programming puzzle enthusiasts and code golfers
Engineering
Q&A for professionals and students of engineering
Chemistry
Q&A for scientists, academics, teachers, and students in the field of chemistry
Geographic Information Systems
Q&A for cartographers, geographers and GIS professionals
Mythology & Folklore
Q&A for enthusiasts and scholars of mythology and folklore
Ask Patents
Q&A for people interested in improving the patent system
Electrical Engineering
Q&A for electronics and electrical engineering professionals, students, and enthusiasts