I am a former research mathematician, and now a C++ software developer on Linux and Windows.
Unix & Linux
Q&A for users of Linux, FreeBSD and other Un*x-like operating systems.
Area 51
Stack Exchange Network staging zone, where users come together to build new Q&A sites
Server Fault
Q&A for professional system and network administrators
Super User
Q&A for computer enthusiasts and power users
Game Development
Q&A for professional and independent game developers
Meta Stack Overflow
Q&A for meta-discussion of the Stack Exchange family of Q&A websites
Cross Validated
Q&A for statisticians, data analysts, data miners and data visualization experts
Mathematics
Q&A for people studying math at any level and professionals in related fields
Android Enthusiasts
Q&A for enthusiasts and power users of the Android operating system
Quantitative Finance
Q&A for finance professionals and academics
Graphic Design
Q&A for professional graphic designers and non-designers trying to do their own graphic design
Raspberry Pi
Q&A for users and developers of hardware and software for Raspberry Pi
Cryptography
Q&A for software developers, mathematicians and others interested in cryptography
