Mathematics
Q&A for people studying math at any level and professionals in related fields
Latin Language
Q&A for linguists, teachers, and students wanting to discuss the finer points of the Latin language
Portuguese Language
Q&A for linguists, teachers and learners wanting to discuss the finer points of the Portuguese language
Christianity
Q&A for committed Christians, experts in Christianity and those interested in learning more
English Language Learners
Q&A for speakers of other languages learning English
Physics
Q&A for active researchers, academics and students of physics
Stack Overflow
Q&A for professional and enthusiast programmers
Music Fans
Q&A for music historians, critics, and fans
Android Enthusiasts
Q&A for enthusiasts and power users of the Android operating system
TeX - LaTeX
Q&A for users of TeX, LaTeX, ConTeXt, and related typesetting systems
English Language & Usage
Q&A for linguists, etymologists, and serious English language enthusiasts
Unix & Linux
Q&A for users of Linux, FreeBSD and other Un*x-like operating systems
Economics
Q&A for those who study, teach, research and apply economics and econometrics
Philosophy
Q&A for those interested in the study of the fundamental nature of knowledge, reality, and existence
Chemistry
Q&A for scientists, academics, teachers, and students in the field of chemistry