BY DAY: Analyst, Data-Miner and Developer. Working in SQL, JAVA, Cold Fusion, R, Visual Basic, Python. BY NIGHT: Software coder for open-source flight simulator software. FOR FUN: TaeKwonDo and Arnis :) :)
Blender
Q&A for people who use Blender to create 3D graphics, animations, or games
English Language Learners
Q&A for speakers of other languages learning English
Stack Overflow
Q&A for professional and enthusiast programmers
Bicycles
Q&A for people who build and repair bicycles, people who train cycling, or commute on bicycles
Retrocomputing
Q&A for vintage-computer hobbyists interested in restoring, preserving, and using the classic computer and gaming systems of yesteryear
Cross Validated
Q&A for people interested in statistics, machine learning, data analysis, data mining, and data visualization
Mathematics
Q&A for people studying math at any level and professionals in related fields
3D Printing
Q&A for 3D printing enthusiasts
Mathematica
Q&A for users of Wolfram Mathematica
Meta Stack Exchange
Q&A for meta-discussion of the Stack Exchange family of Q&A websites
Software Quality Assurance & Testing
Q&A for software quality control experts, automation engineers, and software testers
Computer Graphics
Q&A for computer graphics researchers and programmers
Music: Practice & Theory
Q&A for musicians, students, and enthusiasts
User Experience
Q&A for user experience researchers and experts
TeX - LaTeX
Q&A for users of TeX, LaTeX, ConTeXt, and related typesetting systems
Artificial Intelligence
Q&A for people interested in conceptual questions about life and challenges in a world where "cognitive" functions can be mimicked in purely digital environment
Worldbuilding
Q&A for writers/artists using science, geography and culture to construct imaginary worlds and settings
Open Source
Q&A for people organizing, marketing or licensing open source development projects
Mathematics Educators
Q&A for those involved in the field of teaching mathematics
Amateur Radio
Q&A for amateur radio enthusiasts
Electrical Engineering
Q&A for electronics and electrical engineering professionals, students, and enthusiasts
Signal Processing
Q&A for practitioners of the art and science of signal, image and video processing
Politics
Q&A for people interested in governments, policies, and political processes
Philosophy
Q&A for those interested in the study of the fundamental nature of knowledge, reality, and existence
Aviation
Q&A for aircraft pilots, mechanics, and enthusiasts
Space Exploration
Q&A for spacecraft operators, scientists, engineers, and enthusiasts
Data Science
Q&A for Data science professionals, Machine Learning specialists, and those interested in learning more about the field
Bricks
Q&A for LEGO® and building block enthusiasts
Engineering
Q&A for professionals and students of engineering
Arduino
Q&A for developers of open-source hardware and software that is compatible with Arduino
Code Review
Q&A for peer programmer code reviews
Server Fault
Q&A for system and network administrators
Computer Science
Q&A for students, researchers and practitioners of computer science
Martial Arts
Q&A for students and teachers of all martial arts
Raspberry Pi
Q&A for users and developers of hardware and software for Raspberry Pi
Motor Vehicle Maintenance & Repair
Q&A for mechanics and DIY enthusiast owners of cars, trucks, and motorcycles
Information Security
Q&A for information security professionals
Unix & Linux
Q&A for users of Linux, FreeBSD and other Un*x-like operating systems
Physics
Q&A for active researchers, academics and students of physics
Graphic Design
Q&A for Graphic Design professionals, students, and enthusiasts
Super User
Q&A for computer enthusiasts and power users
Game Development
Q&A for professional and independent game developers
The Workplace
Q&A for members of the workforce navigating the professional setting
Software Engineering
Q&A for professionals, academics, and students working within the systems development life cycle
Ask Ubuntu
Q&A for Ubuntu users and developers
English Language & Usage
Q&A for linguists, etymologists, and serious English language enthusiasts
Academia
Q&A for academics and those enrolled in higher education
Database Administrators
Q&A for database professionals who wish to improve their database skills and learn from others in the community