Stack Overflow
Q&A for professional and enthusiast programmers
Ask Different
Q&A for power users of Apple hardware and software
Super User
Q&A for computer enthusiasts and power users
Raspberry Pi
Q&A for users and developers of hardware and software for Raspberry Pi
English Language & Usage
Q&A for linguists, etymologists, and serious English language enthusiasts
Electrical Engineering
Q&A for electronics and electrical engineering professionals, students, and enthusiasts
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
Physics
Q&A for active researchers, academics and students of physics
Arqade
Q&A for passionate videogamers on all platforms
Anime & Manga
Q&A for anime and manga fans
Meta Stack Exchange
Q&A for meta-discussion of the Stack Exchange family of Q&A websites
Blender
Q&A for people who use Blender to create 3D graphics, animations, or games
Science Fiction & Fantasy
Q&A for science fiction and fantasy enthusiasts
The Workplace
Q&A for members of the workforce navigating the professional setting
Physical Fitness
Q&A for physical fitness professionals, athletes, trainers, and those providing health-related needs
Writing
Q&A for the craft of professional writing, including fiction, non-fiction, technical, scholarly, and commercial writing
Information Security
Q&A for information security professionals
Biology
Q&A for biology researchers, academics, and students
Unix & Linux
Q&A for users of Linux, FreeBSD and other Un*x-like operating systems
Mathematics
Q&A for people studying math at any level and professionals in related fields
Seasoned Advice
Q&A for professional and amateur chefs
Movies & TV
Q&A for movie and TV enthusiasts
Academia
Q&A for academics and those enrolled in higher education
Software Engineering
Q&A for professionals, academics, and students working within the systems development life cycle
Music: Practice & Theory
Q&A for musicians, students, and enthusiasts
Worldbuilding
Q&A for writers/artists using science, geography and culture to construct imaginary worlds and settings
Hardware Recommendations
Q&A for people seeking specific hardware recommendations
Area 51
Q&A for proposing new sites in the Stack Exchange network