Code Review
Q&A for peer programmer code reviews
Super User
Q&A for computer enthusiasts and power users
Mathematics
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Software Recommendations
Q&A for people seeking specific software recommendations
Graphic Design
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Ask Ubuntu
Q&A for Ubuntu users and developers
Software Quality Assurance & Testing
Q&A for software quality control experts, automation engineers, and software testers
Data Science
Q&A for Data science professionals, Machine Learning specialists, and those interested in learning more about the field
Cross Validated
Q&A for people interested in statistics, machine learning, data analysis, data mining, and data visualization
TeX - LaTeX
Q&A for users of TeX, LaTeX, ConTeXt, and related typesetting systems
Computational Science
Q&A for scientists using computers to solve scientific problems
Meta Stack Exchange
Q&A for meta-discussion of the Stack Exchange family of Q&A websites
Database Administrators
Q&A for database professionals who wish to improve their database skills and learn from others in the community
Code Golf
Q&A for programming puzzle enthusiasts and code golfers
English Language & Usage
Q&A for linguists, etymologists, and serious English language enthusiasts
Software Engineering
Q&A for professionals, academics, and students working within the systems development life cycle
Stack Overflow на русском
Вопросы и ответы для программистов
Server Fault
Q&A for system and network administrators
Unix & Linux
Q&A for users of Linux, FreeBSD and other Un*x-like operating systems
Russian Language
Q&A for students, teachers, and linguists wanting to discuss the finer points of the Russian language
Information Security
Q&A for information security professionals