Stack Overflow
Q&A for professional and enthusiast programmers
Worldbuilding
Q&A for writers/artists using science, geography and culture to construct imaginary worlds and settings
Science Fiction & Fantasy
Q&A for science fiction and fantasy enthusiasts
Academia
Q&A for academics and those enrolled in higher education
The Workplace
Q&A for members of the workforce navigating the professional setting
Law
Q&A for legal professionals, students, and others with experience or interest in law
User Experience
Q&A for user experience researchers and experts
Super User
Q&A for computer enthusiasts and power users
Interpersonal Skills
Q&A for people looking to improve their interpersonal communication skills
Writing
Q&A for the craft of professional writing, including fiction, non-fiction, technical, scholarly, and commercial writing
Software Engineering
Q&A for professionals, academics, and students working within the systems development life cycle
Game Development
Q&A for professional and independent game developers
Database Administrators
Q&A for database professionals who wish to improve their database skills and learn from others in the community
Spanish Language
Q&A for linguists, teachers, students and Spanish language enthusiasts in general wanting to discuss the finer points of the language
Home Improvement
Q&A for contractors and serious DIYers
Arqade
Q&A for passionate videogamers on all platforms
Code Golf
Q&A for programming puzzle enthusiasts and code golfers
Parenting
Q&A for parents, grandparents, nannies and others with a parenting role
Personal Finance & Money
Q&A for people who want to be financially literate
English Language Learners
Q&A for speakers of other languages learning English
Puzzling
Q&A for those who create, solve, and study puzzles
Open Source
Q&A for people organizing, marketing or licensing open source development projects