Doing mainly iOS programming, but also some Python, Bash, Java, C++ and other stuff!
Stack Overflow
Q&A for professional and enthusiast programmers
Code Review
Q&A for peer programmer code reviews
Unix & Linux
Q&A for users of Linux, FreeBSD and other Un*x-like operating systems
TeX - LaTeX
Q&A for users of TeX, LaTeX, ConTeXt, and related typesetting systems
Ask Different
Q&A for power users of Apple hardware and software
Mathematics
Q&A for people studying math at any level and professionals in related fields
Signal Processing
Q&A for practitioners of the art and science of signal, image and video processing
Super User
Q&A for computer enthusiasts and power users
Area 51
Q&A for proposing new sites in the Stack Exchange network
English Language & Usage
Q&A for linguists, etymologists, and serious English language enthusiasts
Gardening & Landscaping
Q&A for gardeners and landscapers
Graphic Design
Q&A for Graphic Design professionals, students, and enthusiasts
Cross Validated
Q&A for people interested in statistics, machine learning, data analysis, data mining, and data visualization
Photography
Q&A for professional, enthusiast and amateur photographers
Skeptics
Q&A for scientific skepticism
Game Development
Q&A for professional and independent game developers
MathOverflow
Q&A for professional mathematicians
User Experience
Q&A for user experience researchers and experts
Puzzling
Q&A for those who create, solve, and study puzzles
Meta Stack Exchange
Q&A for meta-discussion of the Stack Exchange family of Q&A websites
Blender
Q&A for people who use Blender to create 3D graphics, animations, or games