Super User
Q&A for computer enthusiasts and power users
Arqade
Q&A for passionate videogamers on all platforms
Stack Overflow
Q&A for professional and enthusiast programmers
Android Enthusiasts
Q&A for enthusiasts and power users of the Android operating system
Anime & Manga
Q&A for anime and manga fans
Game Development
Q&A for professional and independent game developers
Pets
Q&A for pet owners, caretakers, breeders, veterinarians, and trainers
Hardware Recommendations
Q&A for people seeking specific hardware recommendations
Ask Ubuntu
Q&A for Ubuntu users and developers
Ask Different
Q&A for power users of Apple hardware and software
Japanese Language
Q&A for students, teachers, and linguists wanting to discuss the finer points of the Japanese language
Worldbuilding
Q&A for writers/artists using science, geography and culture to construct imaginary worlds and settings
Software Quality Assurance & Testing
Q&A for software quality control experts, automation engineers, and software testers
Server Fault
Q&A for system and network administrators
Software Engineering
Q&A for professionals, academics, and students working within the systems development life cycle
Meta Stack Exchange
Q&A for meta-discussion of the Stack Exchange family of Q&A websites
Web Applications
Q&A for power users of web applications
elementary OS
Q&A for developers and users of elementary OS and applications