C++, Go, Python, JS.
Algorithms, unix network programming, signal processing, audio, data mining, big data.
My open source audio editor with multithreaded FFT display: http://sourceforge.net/projects/audigger/
HTML5 / C++ game http://fintank.ru/
Q&A for professional and enthusiast programmers
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Q&A for professional, enthusiast and amateur photographers
Q&A for people studying math at any level and professionals in related fields
Q&A for information security professionals
Q&A for enthusiasts and power users of the Android operating system
Q&A for electronics and electrical engineering professionals, students, and enthusiasts
Q&A for practitioners of the art and science of signal, image and video processing
Q&A for professional and independent game developers