A wandering Diogenes in search of the perfect algorithm. A mariner on the stormy seas of computation. An impresario of shape and quantity.
Aviation
Q&A for aircraft pilots, mechanics, and enthusiasts
Stack Overflow
Q&A for professional and enthusiast programmers
Personal Finance & Money
Q&A for people who want to be financially literate
Latin Language
Q&A for linguists, teachers, and students wanting to discuss the finer points of the Latin language
The Workplace
Q&A for members of the workforce navigating the professional setting
Law
Q&A for legal professionals, students, and others with experience or interest in law
Home Improvement
Q&A for contractors and serious DIYers
Super User
Q&A for computer enthusiasts and power users
Travel
Q&A for road warriors and seasoned travelers
Unix & Linux
Q&A for users of Linux, FreeBSD and other Un*x-like operating systems
Politics
Q&A for people interested in governments, policies, and political processes
Physics
Q&A for active researchers, academics and students of physics
Mathematica
Q&A for users of Wolfram Mathematica
Seasoned Advice
Q&A for professional and amateur chefs
Arqade
Q&A for passionate videogamers on all platforms
Chemistry
Q&A for scientists, academics, teachers, and students in the field of chemistry
Biology
Q&A for biology researchers, academics, and students
Electrical Engineering
Q&A for electronics and electrical engineering professionals, students, and enthusiasts
Vi and Vim
Q&A for people using the vi and Vim families of text editors
Woodworking
Q&A for professional and amateur woodworkers
English Language & Usage
Q&A for linguists, etymologists, and serious English language enthusiasts
Photography
Q&A for professional, enthusiast and amateur photographers
Earth Science
Q&A for those interested in the geology, meteorology, oceanography, and environmental sciences
Chess
Q&A for serious players and enthusiasts of chess
Economics
Q&A for those who study, teach, research and apply economics and econometrics
Academia
Q&A for academics and those enrolled in higher education
Engineering
Q&A for professionals and students of engineering
Motor Vehicle Maintenance & Repair
Q&A for mechanics and DIY enthusiast owners of cars, trucks, and motorcycles
Information Security
Q&A for information security professionals
Bitcoin
Q&A for Bitcoin users, developers, and enthusiasts
Lifehacks
Q&A for people looking to bypass life's everyday problems with simple tricks
Mathematics
Q&A for people studying math at any level and professionals in related fields
Graphic Design
Q&A for Graphic Design professionals, students, and enthusiasts
Gardening & Landscaping
Q&A for gardeners and landscapers
Astronomy
Q&A for astronomers and astrophysicists
Music: Practice & Theory
Q&A for musicians, students, and enthusiasts
Linguistics
Q&A for professional linguists and others with an interest in linguistic research and theory
Sports
Q&A for participants in team and individual sport activities
Computer Science
Q&A for students, researchers and practitioners of computer science
Skeptics
Q&A for scientific skepticism
Meta Stack Exchange
Q&A for meta-discussion of the Stack Exchange family of Q&A websites
Software Engineering
Q&A for professionals, academics, and students working within the systems development life cycle
Arts & Crafts
Q&A for artists and crafters
Server Fault
Q&A for system and network administrators
Ask Different
Q&A for power users of Apple hardware and software
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
Pets
Q&A for pet owners, caretakers, breeders, veterinarians, and trainers
Space Exploration
Q&A for spacecraft operators, scientists, engineers, and enthusiasts
Parenting
Q&A for parents, grandparents, nannies and others with a parenting role
Korean Language
Q&A for linguists, teachers and students of the Korean language
Worldbuilding
Q&A for writers/artists using science, geography and culture to construct imaginary worlds and settings
Mythology & Folklore
Q&A for enthusiasts and scholars of mythology and folklore
Psychology & Neuroscience
Q&A for practitioners, researchers, and students in cognitive science, psychology, neuroscience, and psychiatry
Board & Card Games
Q&A for people who like playing board games, designing board games or modifying the rules of existing board games
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
Music Fans
Q&A for music historians, critics, and fans
Retrocomputing
Q&A for vintage-computer hobbyists interested in restoring, preserving, and using the classic computer and gaming systems of yesteryear
English Language Learners
Q&A for speakers of other languages learning English
Biblical Hermeneutics
Q&A for professors, theologians, and those interested in exegetical analysis of biblical texts
French Language
Q&A for students, teachers, and linguists wanting to discuss the finer points of the French language
Sound Design
Q&A for sound engineers, producers, editors, and enthusiasts
Network Engineering
Q&A for network engineers
German Language
Q&A for speakers of German wanting to discuss the finer points of the language and translation
Martial Arts
Q&A for students and teachers of all martial arts
Science Fiction & Fantasy
Q&A for science fiction and fantasy enthusiasts
Chinese Language
Q&A for students, teachers, and linguists wanting to discuss the finer points of the Chinese language
Geographic Information Systems
Q&A for cartographers, geographers and GIS professionals
Web Applications
Q&A for power users of web applications
Japanese Language
Q&A for students, teachers, and linguists wanting to discuss the finer points of the Japanese language
TeX - LaTeX
Q&A for users of TeX, LaTeX, ConTeXt, and related typesetting systems
Genealogy & Family History
Q&A for expert genealogists and people interested in genealogy or family history
Italian Language
Q&A for students, teachers, and linguists wanting to discuss the finer points of the Italian language
Signal Processing
Q&A for practitioners of the art and science of signal, image and video processing
Christianity
Q&A for committed Christians, experts in Christianity and those interested in learning more
Cryptography
Q&A for software developers, mathematicians and others interested in cryptography
The Great Outdoors
Q&A for people who love being outdoors enjoying nature and wilderness, and learning about the required skills and equipment
Puzzling
Q&A for those who create, solve, and study puzzles
Open Data
Q&A for developers and researchers interested in open data
Interpersonal Skills
Q&A for people looking to improve their interpersonal communication skills
Quantitative Finance
Q&A for finance professionals and academics
Language Learning
Q&A for students, teachers, polyglots, and anyone interested in the techniques of second-language acquisition
Portuguese Language
Q&A for linguists, teachers and learners wanting to discuss the finer points of the Portuguese language
Buddhism
Q&A for people practicing or interested in Buddhist philosophy, teaching, and practice
3D Printing
Q&A for 3D printing enthusiasts
Code Review
Q&A for peer programmer code reviews
Islam
Q&A for Muslims, experts in Islam, and those interested in learning more about Islam
Blender
Q&A for people who use Blender to create 3D graphics, animations, or games
Physical Fitness
Q&A for physical fitness professionals, athletes, trainers, and those providing health-related needs
Data Science
Q&A for Data science professionals, Machine Learning specialists, and those interested in learning more about the field
Spanish Language
Q&A for linguists, teachers, students and Spanish language enthusiasts in general wanting to discuss the finer points of the language
MathOverflow
Q&A for professional mathematicians
Philosophy
Q&A for those interested in the study of the fundamental nature of knowledge, reality, and existence
Mi Yodeya
Q&A for those who base their lives on Jewish law and tradition and anyone interested in learning more
Code Golf
Q&A for programming puzzle enthusiasts and code golfers
Theoretical Computer Science
Q&A for theoretical computer scientists and researchers in related fields
Russian Language
Q&A for students, teachers, and linguists wanting to discuss the finer points of the Russian language
Beer, Wine & Spirits
Q&A for alcoholic beverage aficionados and those interested in beer, wine, or spirits
Amateur Radio
Q&A for amateur radio enthusiasts