Scientist, Smalltalk programmer, and Firefighter; investigating the enrichment of the human experience especially via technology
Stack Overflow
Q&A for professional and enthusiast programmers
Super User
Q&A for computer enthusiasts and power users
Area 51
Q&A for proposing new sites in the Stack Exchange network
Server Fault
Q&A for system and network administrators
Ask Different
Q&A for power users of Apple hardware and software
Software Engineering
Q&A for professionals, academics, and students working within the systems development life cycle
Law
Q&A for legal professionals, students, and others with experience or interest in law
Woodworking
Q&A for professional and amateur woodworkers
Coffee
Q&A for people interested in all aspects of producing and consuming coffee
Cross Validated
Q&A for people interested in statistics, machine learning, data analysis, data mining, and data visualization
Unix & Linux
Q&A for users of Linux, FreeBSD and other Un*x-like operating systems
Web Applications
Q&A for power users of web applications
Home Improvement
Q&A for contractors and serious DIYers
Video Production
Q&A for engineers, producers, editors and enthusiasts spanning the fields of video and media creation
Information Security
Q&A for information security professionals
Reverse Engineering
Q&A for researchers and developers who explore the principles of a system through analysis of its structure, function, and operation
Gardening & Landscaping
Q&A for gardeners and landscapers
Ask Ubuntu
Q&A for Ubuntu users and developers
Motor Vehicle Maintenance & Repair
Q&A for mechanics and DIY enthusiast owners of cars, trucks, and motorcycles
Code Golf
Q&A for programming puzzle enthusiasts and code golfers
Cryptography
Q&A for software developers, mathematicians and others interested in cryptography
Sustainable Living
Q&A for folks dedicated to a lifestyle that can be maintained indefinitely without depleting available resources
Travel
Q&A for road warriors and seasoned travelers