Stack Overflow
Q&A for professional and enthusiast programmers
Software Engineering
Q&A for professionals, academics, and students working within the systems development life cycle
Code Review
Q&A for peer programmer code reviews
Physics
Q&A for active researchers, academics and students of physics
Retrocomputing
Q&A for vintage-computer hobbyists interested in restoring, preserving, and using the classic computer and gaming systems of yesteryear
Academia
Q&A for academics and those enrolled in higher education
Photography
Q&A for professional, enthusiast and amateur photographers
German Language
Q&A for speakers of German wanting to discuss the finer points of the language and translation
Programming Language Design and Implementation
Q&A for designers and implementers of computer programming languages
Computer Science Educators
Q&A for those involved in the field of teaching Computer Science
Electrical Engineering
Q&A for electronics and electrical engineering professionals, students, and enthusiasts
Mathematics Educators
Q&A for those involved in the field of teaching mathematics
Science Fiction & Fantasy
Q&A for science fiction and fantasy enthusiasts
Space Exploration
Q&A for spacecraft operators, scientists, engineers, and enthusiasts
Language Learning
Q&A for students, teachers, polyglots, and anyone interested in the techniques of second-language acquisition
Bitcoin
Q&A for Bitcoin users, developers, and enthusiasts
The Workplace
Q&A for members of the workforce navigating the professional setting
Computer Science
Q&A for students, researchers and practitioners of computer science
Linguistics
Q&A for professional linguists and others with an interest in linguistic research and theory
Engineering
Q&A for professionals and students of engineering
Mathematics
Q&A for people studying math at any level and professionals in related fields
Earth Science
Q&A for those interested in the geology, meteorology, oceanography, and environmental sciences
Puzzling
Q&A for those who create, solve, and study puzzles
Geographic Information Systems
Q&A for cartographers, geographers and GIS professionals
Bricks
Q&A for LEGO® and building block enthusiasts
Open Source
Q&A for people organizing, marketing or licensing open source development projects
Home Improvement
Q&A for contractors and serious DIYers
Philosophy
Q&A for those interested in the study of the fundamental nature of knowledge, reality, and existence
Signal Processing
Q&A for practitioners of the art and science of signal, image and video processing
Arduino
Q&A for developers of open-source hardware and software that is compatible with Arduino
Game Development
Q&A for professional and independent game developers
Aviation
Q&A for aircraft pilots, mechanics, and enthusiasts
Expatriates
Q&A for people living abroad on a long-term basis
The Great Outdoors
Q&A for people who love being outdoors enjoying nature and wilderness, and learning about the required skills and equipment
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
Interpersonal Skills
Q&A for people looking to improve their interpersonal communication skills