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English Language & Usage
Q&A for linguists, etymologists, and serious English language enthusiasts
Programmers
Q&A for professional programmers interested in conceptual questions about software development
Game Development
Q&A for professional and independent game developers
Spanish Language & Usage
Q&A for students, teachers, and linguists wanting to discuss the finer points of the Spanish language
Mathematics
Q&A for people studying math at any level and professionals in related fields
Programming Puzzles & Code Golf
Q&A for programming puzzle enthusiasts and code golfers
Meta Stack Overflow
Q&A for meta-discussion of the Stack Exchange family of Q&A websites
Computer Science
Q&A for students, researchers and practitioners of computer science
Christianity
Q&A for committed Christians, experts in Christianity and those interested in learning more
TeX - LaTeX
Q&A for users of TeX, LaTeX, ConTeXt, and related typesetting systems
Theoretical Computer Science
Q&A for theoretical computer scientists and researchers in related fields
English Language Learners
Q&A for speakers of other languages learning English
Cross Validated
Q&A for statisticians, data analysts, data miners and data visualization experts
Science Fiction & Fantasy
Q&A for science fiction and fantasy enthusiasts
Area 51
Stack Exchange Network staging zone, where users come together to build new Q&A sites
Physics
Q&A for active researchers, academics and students of physics
French Language & Usage
Q&A for students, teachers, and linguists wanting to discuss the finer points of the French language
Linguistics
Q&A for professional linguists and others with an interest in linguistic research and theory
Writers
Q&A for authors, editors, reviewers, professional writers, and aspiring writers
User Experience
Q&A for user experience researchers and experts
Graphic Design
Q&A for professional graphic designers and non-designers trying to do their own graphic design
Ask Different
Q&A for power users of Apple hardware and software
Electrical Engineering
Q&A for electronics and electrical engineering professionals, students, and enthusiasts
Role-playing Games
Q&A for gamemasters and players of tabletop, paper-and-pencil role-playing games
Photography
Q&A for professional, enthusiast and amateur photographers
Unix & Linux
Q&A for users of Linux, FreeBSD and other Un*x-like operating systems.
Bicycles
Q&A for people who build and repair bicycles, people who train cycling, or commute on bicycles
The Workplace
Q&A for members of the workforce navigating the professional setting
Parenting
Q&A for parents, grandparents, nannies and others with a parenting role
Genealogy & Family History
Q&A for expert genealogists and people interested in genealogy or family history
Physical Fitness
Q&A for physical fitness professionals, athletes, trainers, and those providing health-related needs
Salesforce
Q&A for Salesforce administrators, implementation experts, developers and anybody in-between
Signal Processing
Q&A for practitioners of the art and science of signal, image and video processing
Musical Practice & Performance
Q&A for musicians, students, and enthusiasts
Chinese Language & Usage
Q&A for students, teachers, and linguists wanting to discuss the finer points of the Chinese language
Philosophy
Q&A for those interested in logical reasoning
German Language & Usage
Q&A for speakers of German wanting to discuss the finer points of the language and translation