Stack Overflow
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Super User
Q&A for computer enthusiasts and power users
German Language
Q&A for speakers of German wanting to discuss the finer points of the language and translation
Ask Ubuntu
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Internet of Things
Q&A for builders and users of networked sensors and control devices in the contexts of smart homes, industry automation, or environmental sensors
Database Administrators
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Arduino
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Engineering
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Raspberry Pi
Q&A for users and developers of hardware and software for Raspberry Pi
Latin Language
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Movies & TV
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The Workplace
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User Experience
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Information Security
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Meta Stack Exchange
Q&A for meta-discussion of the Stack Exchange family of Q&A websites
Server Fault
Q&A for system and network administrators
Unix & Linux
Q&A for users of Linux, FreeBSD and other Un*x-like operating systems
Aviation
Q&A for aircraft pilots, mechanics, and enthusiasts