Philosophy
Q&A for those interested in the study of the fundamental nature of knowledge, reality, and existence
English Language Learners
Q&A for speakers of other languages learning English
Stack Overflow
Q&A for professional and enthusiast programmers
Cross Validated
Q&A for people interested in statistics, machine learning, data analysis, data mining, and data visualization
Japanese Language
Q&A for students, teachers, and linguists wanting to discuss the finer points of the Japanese language
Academia
Q&A for academics and those enrolled in higher education
English Language & Usage
Q&A for linguists, etymologists, and serious English language enthusiasts
Meta Stack Exchange
Q&A for meta-discussion of the Stack Exchange family of Q&A websites
Personal Finance & Money
Q&A for people who want to be financially literate
History
Q&A for historians and history buffs
The Workplace
Q&A for members of the workforce navigating the professional setting
Mathematics
Q&A for people studying math at any level and professionals in related fields
Data Science
Q&A for Data science professionals, Machine Learning specialists, and those interested in learning more about the field
Seasoned Advice
Q&A for professional and amateur chefs
Quantitative Finance
Q&A for finance professionals and academics