Information Security
Q&A for information security professionals
Unix & Linux
Q&A for users of Linux, FreeBSD and other Un*x-like operating systems
Meta Stack Exchange
Q&A for meta-discussion of the Stack Exchange family of Q&A websites
Vi and Vim
Q&A for people using the vi and Vim families of text editors
Server Fault
Q&A for system and network administrators
Stack Overflow
Q&A for professional and enthusiast programmers
Super User
Q&A for computer enthusiasts and power users
German Language
Q&A for speakers of German wanting to discuss the finer points of the language and translation
Physics
Q&A for active researchers, academics and students of physics
Area 51
Q&A for proposing new sites in the Stack Exchange network
Music: Practice & Theory
Q&A for musicians, students, 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
Network Engineering
Q&A for network engineers
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
Electrical Engineering
Q&A for electronics and electrical engineering professionals, students, and enthusiasts
Software Engineering
Q&A for professionals, academics, and students working within the systems development life cycle
Space Exploration
Q&A for spacecraft operators, scientists, engineers, and enthusiasts
Android Enthusiasts
Q&A for enthusiasts and power users of the Android operating system
English Language Learners
Q&A for speakers of other languages learning English
Academia
Q&A for academics and those enrolled in higher education
Aviation
Q&A for aircraft pilots, mechanics, and enthusiasts
Bicycles
Q&A for people who build and repair bicycles, people who train cycling, or commute on bicycles
Astronomy
Q&A for astronomers and astrophysicists
Code Review
Q&A for peer programmer code reviews
Seasoned Advice
Q&A for professional and amateur chefs
Motor Vehicle Maintenance & Repair
Q&A for mechanics and DIY enthusiast owners of cars, trucks, and motorcycles
User Experience
Q&A for user experience researchers and experts
Personal Finance & Money
Q&A for people who want to be financially literate
WordPress Development
Q&A for WordPress developers and administrators
Earth Science
Q&A for those interested in the geology, meteorology, oceanography, and environmental sciences
Web Applications
Q&A for power users of web applications
Worldbuilding
Q&A for writers/artists using science, geography and culture to construct imaginary worlds and settings
Cross Validated
Q&A for people interested in statistics, machine learning, data analysis, data mining, and data visualization
Cryptography
Q&A for software developers, mathematicians and others interested in cryptography
Science Fiction & Fantasy
Q&A for science fiction and fantasy enthusiasts
Engineering
Q&A for professionals and students of engineering
Mathematics Educators
Q&A for those involved in the field of teaching mathematics
Politics
Q&A for people interested in governments, policies, and political processes
Stack Apps
Q&A for apps, scripts, and development with the Stack Exchange API
Open Source
Q&A for people organizing, marketing or licensing open source development projects
History
Q&A for historians and history buffs
Software Recommendations
Q&A for people seeking specific software recommendations
Retrocomputing
Q&A for vintage-computer hobbyists interested in restoring, preserving, and using the classic computer and gaming systems of yesteryear
Lifehacks
Q&A for people looking to bypass life's everyday problems with simple tricks
Tor
Q&A for researchers, developers, and users of Tor
Code Golf
Q&A for programming puzzle enthusiasts and code golfers
DevOps
Q&A for software engineers working on automated testing, continuous delivery, service integration and monitoring, and building SDLC infrastructure
Travel
Q&A for road warriors and seasoned travelers
Skeptics
Q&A for scientific skepticism
Computer Science Educators
Q&A for those involved in the field of teaching Computer Science
Bitcoin
Q&A for Bitcoin users, developers, and enthusiasts
Chemistry
Q&A for scientists, academics, teachers, and students in the field of chemistry
Home Improvement
Q&A for contractors and serious DIYers
TeX - LaTeX
Q&A for users of TeX, LaTeX, ConTeXt, and related typesetting systems
Reverse Engineering
Q&A for researchers and developers who explore the principles of a system through analysis of its structure, function, and operation
Database Administrators
Q&A for database professionals who wish to improve their database skills and learn from others in the community
Game Development
Q&A for professional and independent game developers
Computer Science
Q&A for students, researchers and practitioners of computer science
Biology
Q&A for biology researchers, academics, and students
The Workplace
Q&A for members of the workforce navigating the professional setting
Interpersonal Skills
Q&A for people looking to improve their interpersonal communication skills
Hardware Recommendations
Q&A for people seeking specific hardware recommendations