Databases: MongoDB, Redis, MySQL, CouchDB...
Frameworks & Libraries: Socket.IO, CodeIgniter, CIBonfire, Express, jQuery, underscore, redis-client, mongoose...
APIs: Twitter, GitHub, Facebook, Youtube...
Q&A for professional and enthusiast programmers
Stack Exchange Network staging zone, where users come together to build new Q&A sites
Q&A for professional system and network administrators
Q&A for computer enthusiasts and power users
Q&A for user experience researchers and experts
Q&A for Ubuntu users and developers
Q&A for active researchers, academics and students of physics
Q&A for people who build and repair bicycles, people who train cycling, or commute on bicycles
Q&A for self-employed and freelance workers
Q&A for researchers, developers, and users of Tor
Q&A for developers and researchers interested in open data
Q&A for software developers, mathematicians and others interested in cryptography
Q&A for researchers and developers who explore the principles of a system through analysis of its structure, function, and operation