Meta Stack Overflow
Q&A for meta-discussion of the Stack Exchange family of Q&A websites
Area 51
Stack Exchange Network staging zone, where users come together to build new Q&A sites
Motor Vehicle Maintenance & Repair
Q&A for mechanics and DIY enthusiast owners of cars, trucks, and motorcycles
Ask Different
Q&A for power users of Apple hardware and software
Raspberry Pi
Q&A for users and developers of hardware and software for Raspberry Pi
Graphic Design
Q&A for professional graphic designers and non-designers trying to do their own graphic design
User Experience
Q&A for user experience researchers and experts
English Language & Usage
Q&A for linguists, etymologists, and serious English language enthusiasts
Android Enthusiasts
Q&A for enthusiasts and power users of the Android operating system
Theoretical Computer Science
Q&A for theoretical computer scientists and researchers in related fields
Physics
Q&A for active researchers, academics and students of physics
Electrical Engineering
Q&A for electronics and electrical engineering professionals, students, and enthusiasts
Mathematics
Q&A for people studying math at any level and professionals in related fields
Stack Apps
Q&A for apps, scripts, and development with the Stack Exchange API
Unix & Linux
Q&A for users of Linux, FreeBSD and other Un*x-like operating systems.
Programmers
Q&A for professional programmers interested in conceptual questions about software development
Server Fault
Q&A for professional system and network administrators
Ask Patents
Q&A for people interested in improving and participating in the patent system
Programming Puzzles & Code Golf
Q&A for programming puzzle enthusiasts and code golfers