Area 51
Stack Exchange Network staging zone, where users come together to build new Q&A sites
Stack Overflow
Q&A for professional and enthusiast programmers
Photography
Q&A for professional, enthusiast and amateur photographers
TeX - LaTeX
Q&A for users of TeX, LaTeX, ConTeXt, and related typesetting systems
Electrical Engineering
Q&A for electronics and electrical engineering professionals, students, and enthusiasts
Cross Validated
Q&A for statisticians, data analysts, data miners and data visualization experts
User Experience
Q&A for user experience researchers and experts
Server Fault
Q&A for professional system and network administrators
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
Stack Apps
Q&A for apps, scripts, and development with the Stack Exchange API
Web Applications
Q&A for power users of web applications
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
Physical Fitness
Q&A for physical fitness professionals, athletes, trainers, and those providing health-related needs
Signal Processing
Q&A for practitioners of the art and science of signal, image and video processing
Cryptography
Q&A for software developers, mathematicians and others interested in cryptography
Robotics
Q&A for professional robotic engineers, hobbyists, researchers and students
Homebrewing
Q&A for dedicated home brewers and serious enthusiasts
Software Quality Assurance & Testing
Q&A for software quality control experts, automation engineers, and software testers