...Including 4 versions. The first one was written with C++ and uses CPU 128-bit double. The second does the same, but was written with D language and Derelict3. The third uses GPU (GLSL shaders) to draw Mandelbrot set. It is extremely fast, but uses only 32-bit float. And finally, the fourth works on CPU, but uses arbitrary precision (OpenMP), so it hasn't limit for depth (except rendering time).