Stack Overflow
Q&A for professional and enthusiast programmers
Programmers
Q&A for professional programmers interested in conceptual questions about software development
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
Personal Productivity
Q&A for people wanting to improve their personal productivity
German Language & Usage
Q&A for speakers of German wanting to discuss the finer points of the language and translation
Academia
Q&A for academics and those enrolled in higher education
Ask Different
Q&A for power users of Apple hardware and software
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.
Stack Apps
Q&A for apps, scripts, and development with the Stack Exchange API
Server Fault
Q&A for professional system and network administrators
Computational Science
Q&A for scientists using computers to solve scientific problems
Computer Science
Q&A for students, researchers and practitioners of computer science
The Workplace
Q&A for members of the workforce navigating the professional setting
Personal Finance & Money
Q&A for people who want to be financially literate
Programming Puzzles & Code Golf
Q&A for programming puzzle enthusiasts and code golfers
Software Quality Assurance & Testing
Q&A for software quality control experts, automation engineers, and software testers