ImageOptim decreases the file size of PNG, JPEG, and GIF images, even those "Saved for Web". It combines OptiPNG, PNGCrush, AdvanceComp, PNGOUT, Jpegoptim + Jpegtran, and Gifsicle for the best possible optimization.
A library for dealing with dimensioned values.
A library that efficiently calculates various mathematical functions using SSE2 SIMD instructions in double precision.