Stack Overflow
Q&A for professional and enthusiast programmers
Science Fiction & Fantasy
Q&A for science fiction and fantasy enthusiasts
Unix & Linux
Q&A for users of Linux, FreeBSD and other Un*x-like operating systems
Super User
Q&A for computer enthusiasts and power users
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
Software Quality Assurance & Testing
Q&A for software quality control experts, automation engineers, and software testers
Electrical Engineering
Q&A for electronics and electrical engineering professionals, students, and enthusiasts
Mathematics
Q&A for people studying math at any level and professionals in related fields
Server Fault
Q&A for system and network administrators
Web Applications
Q&A for power users of web applications
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
Android Enthusiasts
Q&A for enthusiasts and power users of the Android operating system
Retrocomputing
Q&A for vintage-computer hobbyists interested in restoring, preserving, and using the classic computer and gaming systems of yesteryear
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
Vi and Vim
Q&A for people using the vi and Vim families of text editors
Home Improvement
Q&A for contractors and serious DIYers