Stack Overflow
Q&A for professional and enthusiast programmers
Unix & Linux
Q&A for users of Linux, FreeBSD and other Un*x-like operating systems
Android Enthusiasts
Q&A for enthusiasts and power users of the Android operating system
Arduino
Q&A for developers of open-source hardware and software that is compatible with Arduino
Aviation
Q&A for aircraft pilots, mechanics, and enthusiasts
Electrical Engineering
Q&A for electronics and electrical engineering professionals, students, and enthusiasts
Raspberry Pi
Q&A for users and developers of hardware and software for Raspberry Pi
Robotics
Q&A for professional robotic engineers, hobbyists, researchers and students
Space Exploration
Q&A for spacecraft operators, scientists, engineers, and enthusiasts
Code Review
Q&A for peer programmer code reviews
Game Development
Q&A for professional and independent game developers
Software Engineering
Q&A for professionals, academics, and students working within the systems development life cycle