Stack Overflow
Q&A for professional and enthusiast programmers
Unix & Linux
Q&A for users of Linux, FreeBSD and other Un*x-like operating systems
Blender
Q&A for people who use Blender to create 3D graphics, animations, or games
Emacs
Q&A for those using, extending or developing Emacs
Music: Practice & Theory
Q&A for musicians, students, and enthusiasts
Super User
Q&A for computer enthusiasts and power users
TeX - LaTeX
Q&A for users of TeX, LaTeX, ConTeXt, and related typesetting systems
Android Enthusiasts
Q&A for enthusiasts and power users of the Android operating system
Web Applications
Q&A for power users of web applications
History
Q&A for historians and history buffs
Server Fault
Q&A for system and network administrators
Meta Stack Exchange
Q&A for meta-discussion of the Stack Exchange family of Q&A websites
Worldbuilding
Q&A for writers/artists using science, geography and culture to construct imaginary worlds and settings
Software Recommendations
Q&A for people seeking specific software recommendations
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
Skeptics
Q&A for scientific skepticism
Sustainable Living
Q&A for folks dedicated to a lifestyle that can be maintained indefinitely without depleting available resources
Graphic Design
Q&A for Graphic Design professionals, students, and enthusiasts
Sound Design
Q&A for sound engineers, producers, editors, and enthusiasts
Law
Q&A for legal professionals, students, and others with experience or interest in law
Geographic Information Systems
Q&A for cartographers, geographers and GIS professionals
Parenting
Q&A for parents, grandparents, nannies and others with a parenting role
Code Review
Q&A for peer programmer code reviews
Open Source
Q&A for people organizing, marketing or licensing open source development projects
Philosophy
Q&A for those interested in the study of the fundamental nature of knowledge, reality, and existence
English Language & Usage
Q&A for linguists, etymologists, and serious English language enthusiasts
Mathematics
Q&A for people studying math at any level and professionals in related fields
Software Engineering
Q&A for professionals, academics, and students working within the systems development life cycle
Photography
Q&A for professional, enthusiast and amateur photographers
Writing
Q&A for the craft of professional writing, including fiction, non-fiction, technical, scholarly, and commercial writing
Vi and Vim
Q&A for people using the vi and Vim families of text editors
Arqade
Q&A for passionate videogamers on all platforms
Network Engineering
Q&A for network engineers
Role-playing Games
Q&A for gamemasters and players of tabletop, paper-and-pencil role-playing games
Bicycles
Q&A for people who build and repair bicycles, people who train cycling, or commute on bicycles
Information Security
Q&A for information security professionals
Christianity
Q&A for committed Christians, experts in Christianity and those interested in learning more
User Experience
Q&A for user experience researchers and experts
Raspberry Pi
Q&A for users and developers of hardware and software for Raspberry Pi
Open Data
Q&A for developers and researchers interested in open data
Medical Sciences
Q&A for professionals in medical and allied health fields, students of those professions, related academics, and others with a sound understanding of medicine and healthcare-related sciences