I've worked on many platforms over the past 10+ years in IT, from SAS on MVS and VB6/VBA on Windows to Classic ASP to Java to AIX scripting and even some (gasp!) COBOL and JCL.
Most recently I've focused on .NET development for both Windows and Web, and C++ development on Windows.
Q&A for professional and enthusiast programmers
Q&A for meta-discussion of the Stack Exchange family of Q&A websites
Q&A for professional programmers interested in conceptual questions about software development
Q&A for computer enthusiasts and power users
Q&A for system and network administrators
Q&A for power users of web applications
Q&A for linguists, etymologists, and serious English language enthusiasts
Q&A for Information security professionals
Q&A for members of the workforce navigating the professional setting
Q&A for user experience researchers and experts
Q&A for peer programmer code reviews
Stack Exchange Network staging zone, where users come together to build new Q&A sites