Stack Overflow
Q&A for professional and enthusiast programmers
Science Fiction & Fantasy
Q&A for science fiction and fantasy enthusiasts
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
English Language & Usage
Q&A for linguists, etymologists, and serious English language enthusiasts
Russian Language
Q&A for students, teachers, and linguists wanting to discuss the finer points of the Russian language
Ask Ubuntu
Q&A for Ubuntu users and developers
DevOps
Q&A for software engineers working on automated testing, continuous delivery, service integration and monitoring, and building SDLC infrastructure
Super User
Q&A for computer enthusiasts and power users
Project Management
Q&A for project managers
Bicycles
Q&A for people who build and repair bicycles, people who train cycling, or commute on bicycles
Motor Vehicle Maintenance & Repair
Q&A for mechanics and DIY enthusiast owners of cars, trucks, and motorcycles
Software Recommendations
Q&A for people seeking specific software recommendations
Geographic Information Systems
Q&A for cartographers, geographers and GIS professionals
Psychology & Neuroscience
Q&A for practitioners, researchers, and students in cognitive science, psychology, neuroscience, and psychiatry
Русский язык
Cайт вопросов и ответов для лингвистов и энтузиастов русского языка
Movies & TV
Q&A for movie and TV enthusiasts
Philosophy
Q&A for those interested in the study of the fundamental nature of knowledge, reality, and existence
Biology
Q&A for biology researchers, academics, and students
History of Science and Mathematics
Q&A for people interested in the history and origins of science and mathematics
Cross Validated
Q&A for people interested in statistics, machine learning, data analysis, data mining, and data visualization
Law
Q&A for legal professionals, students, and others with experience or interest in law
Woodworking
Q&A for professional and amateur woodworkers
The Workplace
Q&A for members of the workforce navigating the professional setting
Salesforce
Q&A for Salesforce administrators, implementation experts, developers and anybody in-between
Code Review
Q&A for peer programmer code reviews
Information Security
Q&A for information security professionals
Server Fault
Q&A for system and network administrators
Ask Different
Q&A for power users of Apple hardware and software
Ukrainian Language
Q&A for linguists, teachers and students of the Ukrainian language
Mathematics
Q&A for people studying math at any level and professionals in related fields
Web Applications
Q&A for power users of web applications
Skeptics
Q&A for scientific skepticism
Electrical Engineering
Q&A for electronics and electrical engineering professionals, students, and enthusiasts
Android Enthusiasts
Q&A for enthusiasts and power users of the Android operating system
User Experience
Q&A for user experience researchers and experts
Database Administrators
Q&A for database professionals who wish to improve their database skills and learn from others in the community
Physics
Q&A for active researchers, academics and students of physics
Space Exploration
Q&A for spacecraft operators, scientists, engineers, and enthusiasts
Software Engineering
Q&A for professionals, academics, and students working within the systems development life cycle
Graphic Design
Q&A for Graphic Design professionals, students, and enthusiasts
Cryptography
Q&A for software developers, mathematicians and others interested in cryptography
English Language Learners
Q&A for speakers of other languages learning English
German Language
Q&A for speakers of German wanting to discuss the finer points of the language and translation
Theoretical Computer Science
Q&A for theoretical computer scientists and researchers in related fields
Meta Stack Exchange
Q&A for meta-discussion of the Stack Exchange family of Q&A websites