Role-playing Games
Q&A for gamemasters and players of tabletop, paper-and-pencil role-playing games
Stack Overflow
Q&A for professional and enthusiast programmers
Science Fiction & Fantasy
Q&A for science fiction and fantasy enthusiasts
Artificial Intelligence
Q&A for people interested in conceptual questions about life and challenges in a world where "cognitive" functions can be mimicked in purely digital environment
Skeptics
Q&A for scientific skepticism
Anime & Manga
Q&A for anime and manga fans
TeX - LaTeX
Q&A for users of TeX, LaTeX, ConTeXt, and related typesetting systems
Seasoned Advice
Q&A for professional and amateur chefs
Literature
Q&A for scholars and enthusiasts of literature
English Language & Usage
Q&A for linguists, etymologists, and serious English language enthusiasts
Mathematics
Q&A for people studying math at any level and professionals in related fields
Motor Vehicle Maintenance & Repair
Q&A for mechanics and DIY enthusiast owners of cars, trucks, and motorcycles
Board & Card Games
Q&A for people who like playing board games, designing board games or modifying the rules of existing board games
Lifehacks
Q&A for people looking to bypass life's everyday problems with simple tricks
Computer Science
Q&A for students, researchers and practitioners of computer science
Travel
Q&A for road warriors and seasoned travelers
Home Improvement
Q&A for contractors and serious DIYers
Meta Stack Exchange
Q&A for meta-discussion of the Stack Exchange family of Q&A websites
Raspberry Pi
Q&A for users and developers of hardware and software for Raspberry Pi
Unix & Linux
Q&A for users of Linux, FreeBSD and other Un*x-like operating systems
Worldbuilding
Q&A for writers/artists using science, geography and culture to construct imaginary worlds and settings
Super User
Q&A for computer enthusiasts and power users
Electrical Engineering
Q&A for electronics and electrical engineering professionals, students, and enthusiasts
Academia
Q&A for academics and those enrolled in higher education
Physics
Q&A for active researchers, academics and students of physics
MathOverflow
Q&A for professional mathematicians
Writing
Q&A for the craft of professional writing, including fiction, non-fiction, technical, scholarly, and commercial writing
Game Development
Q&A for professional and independent game developers
Cross Validated
Q&A for people interested in statistics, machine learning, data analysis, data mining, and data visualization
Robotics
Q&A for professional robotic engineers, hobbyists, researchers and students
Puzzling
Q&A for those who create, solve, and study puzzles
Interpersonal Skills
Q&A for people looking to improve their interpersonal communication skills
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