A quick but powerful library for monochrome graphics displays using optimized drawing routines. For a discription of all functions check out Buffer.h.
It doesn't use malloc() to allocate memory dynamically, so you have to create the memory area by yourself! Example:
#include <Buffer.h>
#define WIDTH 64
#define HEIGHT 16
uint8_t displaybuf[WIDTH * HEIGHT / 8];
Buffer buff(displaybuf,64,16);