Stack Overflow
Q&A for professional and enthusiast programmers
Server Fault
Q&A for system and network administrators
Super User
Q&A for computer enthusiasts and power users
Blender
Q&A for people who use Blender to create 3D graphics, animations, or games
TeX - LaTeX
Q&A for users of TeX, LaTeX, ConTeXt, and related typesetting systems
Unix & Linux
Q&A for users of Linux, FreeBSD and other Un*x-like operating systems
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
Japanese Language
Q&A for students, teachers, and linguists wanting to discuss the finer points of the Japanese language
Raspberry Pi
Q&A for users and developers of hardware and software for Raspberry Pi
Reverse Engineering
Q&A for researchers and developers who explore the principles of a system through analysis of its structure, function, and operation
Information Security
Q&A for information security professionals
Physics
Q&A for active researchers, academics and students of physics
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
Sitecore
Q&A for developers and end users of the Sitecore CMS and multichannel marketing software
Earth Science
Q&A for those interested in the geology, meteorology, oceanography, and environmental sciences
Web Applications
Q&A for power users of web applications
Code Review
Q&A for peer programmer code reviews
Vi and Vim
Q&A for people using the vi and Vim families of text editors