Stack Overflow
Q&A for professional and enthusiast programmers
Japanese Language
Q&A for students, teachers, and linguists wanting to discuss the finer points of the Japanese language
Christianity
Q&A for committed Christians, experts in Christianity and those interested in learning more
Sports
Q&A for participants in team and individual sport activities
Travel
Q&A for road warriors and seasoned travelers
Photography
Q&A for professional, enthusiast and amateur photographers
English Language Learners
Q&A for speakers of other languages learning English
Electrical Engineering
Q&A for electronics and electrical engineering professionals, students, and enthusiasts
Ask Different
Q&A for power users of Apple hardware and software
Stack Apps
Q&A for apps, scripts, and development with the Stack Exchange API
The Workplace
Q&A for members of the workforce navigating the professional setting
Meta Stack Exchange
Q&A for meta-discussion of the Stack Exchange family of Q&A websites
English Language & Usage
Q&A for linguists, etymologists, and serious English language enthusiasts
Super User
Q&A for computer enthusiasts and power users