Web Developer which uses CMS like Drupal, WordPress, Joomla with some PHP Frameworks.
Unix & Linux
Q&A for users of Linux, FreeBSD and other Un*x-like operating systems.
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
English Language & Usage
Q&A for linguists, etymologists, and serious English language enthusiasts
Theoretical Computer Science
Q&A for theoretical computer scientists and researchers in related fields
Android Enthusiasts
Q&A for enthusiasts and power users of the Android operating system
Bicycles
Q&A for people who build and repair bicycles, people who train cycling, or commute on bicycles
Electrical Engineering
Q&A for electronics and electrical engineering professionals, students, and enthusiasts
Physics
Q&A for active researchers, academics and students of physics
Geographic Information Systems
Q&A for cartographers, geographers and GIS professionals
Cross Validated
Q&A for statisticians, data analysts, data miners and data visualization experts
Server Fault
Q&A for professional system and network administrators
Stack Apps
Q&A for apps, scripts, and development with the Stack Exchange API
Meta Stack Overflow
Q&A for meta-discussion of the Stack Exchange family of Q&A websites
Mathematics
Q&A for people studying math at any level and professionals in related fields
WordPress Answers
Q&A for WordPress developers and administrators
Programmers
Q&A for professional programmers interested in conceptual questions about software development
Photography
Q&A for professional, enthusiast and amateur photographers
Database Administrators
Q&A for database professionals who wish to improve their database skills and learn from others in the community
Game Development
Q&A for professional and independent game developers
Area 51
Stack Exchange Network staging zone, where users come together to build new Q&A sites
