Code Golf
Q&A for programming puzzle enthusiasts and code golfers
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Cross Validated
Q&A for people interested in statistics, machine learning, data analysis, data mining, and data visualization
Tor
Q&A for researchers, developers, and users of Tor
DevOps
Q&A for software engineers working on automated testing, continuous delivery, service integration and monitoring, and building SDLC infrastructure
Retrocomputing
Q&A for vintage-computer hobbyists interested in restoring, preserving, and using the classic computer and gaming systems of yesteryear
Reverse Engineering
Q&A for researchers and developers who explore the principles of a system through analysis of its structure, function, and operation
User Experience
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Mi Yodeya
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Proof Assistants
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Area 51
Q&A for proposing new sites in the Stack Exchange network