Worldbuilding
Q&A for writers/artists using science, geography and culture to construct imaginary worlds and settings
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
Puzzling
Q&A for those who create, solve, and study puzzles
Constructed Languages
Q&A for designers and users of artificial or invented languages, consciously developed instead of having developed naturally
Latin Language
Q&A for linguists, teachers, and students wanting to discuss the finer points of the Latin language
Linguistics
Q&A for professional linguists and others with an interest in linguistic research and theory
Physics
Q&A for active researchers, academics and students of physics
English Language Learners
Q&A for speakers of other languages learning English
Chemistry
Q&A for scientists, academics, teachers, and students in the field of chemistry
Music: Practice & Theory
Q&A for musicians, students, and enthusiasts
Mathematics Educators
Q&A for those involved in the field of teaching mathematics
Stack Overflow
Q&A for professional and enthusiast programmers
Role-playing Games
Q&A for gamemasters and players of tabletop, paper-and-pencil role-playing games
German Language
Q&A for speakers of German wanting to discuss the finer points of the language and translation