.NET: C#, VB, ASP.NET(WebForms, MVC), Telerik, (Fluent)NHibernate...
Java EE (some years ago): JEE, JPA, JSP, JSF...
DB: SQL Server, Oracle, MySQL...
Client: JS, jQuery, KnockoutJS, RequireJS...
Linux: Debian, ArchLinux...
Q&A for professional and enthusiast programmers
Q&A for professional programmers interested in conceptual questions about software development
Q&A for computer enthusiasts and power users
Q&A for meta-discussion of the Stack Exchange family of Q&A websites
Q&A for power users of web applications
Q&A for users of Mathematica
Q&A for members of the workforce navigating the professional setting
Q&A for linguists, etymologists, and serious English language enthusiasts
Q&A for scientific skepticism
Q&A for system and network administrators
Q&A for road warriors and seasoned travelers
Q&A for user experience researchers and experts
Q&A for WordPress developers and administrators
Q&A for active researchers, academics and students of physics
Q&A for professional mathematicians
Q&A for database professionals who wish to improve their database skills and learn from others in the community
Q&A for movie and tv enthusiasts
Q&A for Ubuntu users and developers
Q&A for information security professionals
Q&A for power users of Apple hardware and software
Q&A for people studying math at any level and professionals in related fields
Q&A for contractors and serious DIYers
Q&A for students, researchers and practitioners of computer science
Q&A for musicians, students, and enthusiasts
Q&A for students, teachers, and linguists wanting to discuss the finer points of the Russian language
Q&A for those who create, solve, and study puzzles
Q&A for people seeking specific software recommendations
Q&A for peer programmer code reviews
Q&A for serious players and enthusiasts of chess
Q&A for students, teachers, and linguists wanting to discuss the finer points of the French language
Q&A for parents, grandparents, nannies and others with a parenting role
Stack Exchange Network staging zone, where users come together to build new Q&A sites