Stack Overflow
Q&A for professional and enthusiast programmers
German Language
Q&A for speakers of German wanting to discuss the finer points of the language and translation
Software Engineering
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Travel
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English Language & Usage
Q&A for linguists, etymologists, and serious English language enthusiasts
Super User
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Database Administrators
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Photography
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Mathematics
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History
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Language Learning
Q&A for students, teachers, polyglots, and anyone interested in the techniques of second-language acquisition
Space Exploration
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Linguistics
Q&A for professional linguists and others with an interest in linguistic research and theory