Stack Overflow
Q&A for professional and enthusiast programmers
Server Fault
Q&A for system and network administrators
Geographic Information Systems
Q&A for cartographers, geographers and GIS professionals
Super User
Q&A for computer enthusiasts and power users
Database Administrators
Q&A for database professionals who wish to improve their database skills and learn from others in the community
Personal Finance & Money
Q&A for people who want to be financially literate
Android Enthusiasts
Q&A for enthusiasts and power users of the Android operating system
SharePoint
Q&A for SharePoint enthusiasts
Ask Different
Q&A for power users of Apple hardware and software
User Experience
Q&A for user experience researchers and experts
Unix & Linux
Q&A for users of Linux, FreeBSD and other Un*x-like operating systems
English Language & Usage
Q&A for linguists, etymologists, and serious English language enthusiasts
Information Security
Q&A for information security professionals
DevOps
Q&A for software engineers working on automated testing, continuous delivery, service integration and monitoring, and building SDLC infrastructure
Software Engineering
Q&A for professionals, academics, and students working within the systems development life cycle
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
Arqade
Q&A for passionate videogamers on all platforms
elementary OS
Q&A for developers and users of elementary OS and applications