Stack Overflow
Q&A for professional and enthusiast programmers
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Unix & Linux
Q&A for users of Linux, FreeBSD and other Un*x-like operating systems
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Software Engineering
Q&A for professionals, academics, and students working within the systems development life cycle
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Super User
Q&A for computer enthusiasts and power users
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User Experience
Q&A for user experience researchers and experts
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Mathematics
Q&A for people studying math at any level and professionals in related fields
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Server Fault
Q&A for system and network administrators
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Chinese Language
Q&A for students, teachers, and linguists wanting to discuss the finer points of the Chinese language
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