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Area 51
Stack Exchange Network staging zone, where users come together to build new Q&A sites
Parenting
Q&A for parents, grandparents, nannies and others with a parenting role
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Q&A for enthusiasts and power users of the Android operating system
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Q&A for gamemasters and players of tabletop, paper-and-pencil role-playing games
Server Fault
Q&A for professional system and network administrators
English Language & Usage
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Q&A for apps, scripts, and development with the Stack Exchange API
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Q&A for meta-discussion of the Stack Exchange family of Q&A websites
Mathematics
Q&A for people studying math at any level and professionals in related fields
Game Development
Q&A for professional and independent game developers
Christianity
Q&A for committed Christians, experts in Christianity and those interested in learning more