Stack Overflow
Q&A for professional and enthusiast programmers
Stack Overflow на русском
Вопросы и ответы для программистов
Super User
Q&A for computer enthusiasts and power users
Unix & Linux
Q&A for users of Linux, FreeBSD and other Un*x-like operating systems
Android Enthusiasts
Q&A for enthusiasts and power users of the Android operating system
Meta Stack Exchange
Q&A for meta-discussion of the Stack Exchange family of Q&A websites
Physical Fitness
Q&A for physical fitness professionals, athletes, trainers, and those providing health-related needs
Web Applications
Q&A for power users of web applications
English Language & Usage
Q&A for linguists, etymologists, and serious English language enthusiasts
Software Recommendations
Q&A for people seeking specific software recommendations
Russian Language
Q&A for students, teachers, and linguists wanting to discuss the finer points of the Russian language
Reverse Engineering
Q&A for researchers and developers who explore the principles of a system through analysis of its structure, function, and operation
Arqade
Q&A for passionate videogamers on all platforms