Kolourmatica is a simple color space calculator that allows conversions between 22 different color spaces. It also renders each color space in every other system color space.
libnabo is a fast K Nearest Neighbor library for low-dimensional spaces. It provides a clean, legacy-free, scalar-type–agnostic API thanks to C++ templates.
Voidoria is Fractal Flame rendering and animation software.
An online interactive tutorial and free text assesments.
Bible study and concordance software.