Stack Overflow
Q&A for professional and enthusiast programmers
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Mathematics
Q&A for people studying math at any level and professionals in related fields
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Unix & Linux
Q&A for users of Linux, FreeBSD and other Un*x-like operating systems
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Raspberry Pi
Q&A for users and developers of hardware and software for Raspberry Pi
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Ask Different
Q&A for power users of Apple hardware and software
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User Experience
Q&A for user experience researchers and experts
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Android Enthusiasts
Q&A for enthusiasts and power users of the Android operating system
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TeX - LaTeX
Q&A for users of TeX, LaTeX, ConTeXt, and related typesetting 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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Cryptography
Q&A for software developers, mathematicians and others interested in cryptography
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Information Security
Q&A for information security professionals
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