Stack Overflow
Q&A for professional and enthusiast programmers
Code Golf
Q&A for programming puzzle enthusiasts and code golfers
Software Engineering
Q&A for professionals, academics, and students working within the systems development life cycle
Space Exploration
Q&A for spacecraft operators, scientists, engineers, and enthusiasts
Salesforce
Q&A for Salesforce administrators, implementation experts, developers and anybody in-between
Database Administrators
Q&A for database professionals who wish to improve their database skills and learn from others in the community
Super User
Q&A for computer enthusiasts and power users
Mathematics
Q&A for people studying math at any level and professionals in related fields
Web Applications
Q&A for power users of web applications
Server Fault
Q&A for system and network administrators
Worldbuilding
Q&A for writers/artists using science, geography and culture to construct imaginary worlds and settings
Astronomy
Q&A for astronomers and astrophysicists
The Workplace
Q&A for members of the workforce navigating the professional setting
Russian Language
Q&A for students, teachers, and linguists wanting to discuss the finer points of the Russian language
Board & Card Games
Q&A for people who like playing board games, designing board games or modifying the rules of existing board games
Game Development
Q&A for professional and independent game developers