Stack Overflow
Q&A for professional and enthusiast programmers
Server Fault
Q&A for system and network administrators
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
Ask Different
Q&A for power users of Apple hardware and software
Law
Q&A for legal professionals, students, and others with experience or interest in law
The Workplace
Q&A for members of the workforce navigating the professional setting
English Language Learners
Q&A for speakers of other languages learning English
Academia
Q&A for academics and those enrolled in higher education
Science Fiction & Fantasy
Q&A for science fiction and fantasy enthusiasts
Database Administrators
Q&A for database professionals who wish to improve their database skills and learn from others in the community
Home Improvement
Q&A for contractors and serious DIYers
English Language & Usage
Q&A for linguists, etymologists, and serious English language enthusiasts
Christianity
Q&A for committed Christians, experts in Christianity and those interested in learning more
Parenting
Q&A for parents, grandparents, nannies and others with a parenting role
Arduino
Q&A for developers of open-source hardware and software that is compatible with Arduino
Electrical Engineering
Q&A for electronics and electrical engineering professionals, students, and enthusiasts
Android Enthusiasts
Q&A for enthusiasts and power users of the Android operating system
Travel
Q&A for road warriors and seasoned travelers
Web Applications
Q&A for power users of web applications
Expatriates
Q&A for people living abroad on a long-term basis