CMS: Drupal & WordPress.
Programming languages: PHP, JS, basic Python.
Drupal Answers
Q&A for Drupal developers and administrators
Stack Overflow
Q&A for professional and enthusiast programmers
WordPress Answers
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Unix & Linux
Q&A for users of Linux, FreeBSD and other Un*x-like operating systems.
Arqade
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Science Fiction & Fantasy
Q&A for science fiction and fantasy enthusiasts
Role-playing Games
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Photography
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Android Enthusiasts
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Programmers
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Game Development
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Seasoned Advice
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Bicycles
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User Experience
Q&A for user experience researchers and experts
Database Administrators
Q&A for database professionals who wish to improve their database skills and learn from others in the community
Programming Puzzles & Code Golf
Q&A for programming puzzle enthusiasts and code golfers
Martial Arts
Q&A for students and teachers of all martial arts
Personal Finance & Money
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Personal Productivity
Q&A for people wanting to improve their personal productivity
Physical Fitness
Q&A for physical fitness professionals, athletes, trainers, and those providing health-related needs
Quantitative Finance
Q&A for finance professionals and academics
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The Workplace
Q&A for members of the workforce navigating the professional setting
Answers OnStartups
Q&A for entrepreneurs looking to start or run a new business
Graphic Design
Q&A for professional graphic designers and non-designers trying to do their own graphic design
Area 51
Stack Exchange Network staging zone, where users come together to build new Q&A sites
Ask Different
Q&A for power users of Apple hardware and software
Server Fault
Q&A for professional system and network administrators
