libksd - A cross-platform game framework (written in C++) that would allow you write your game once and compile it for multiple operating systems and environments
SDLMappy - Library that uses 2D tiles based maps created by Mappy. It allows layer transparency
SDLSprite - This C++ class contains the data and functions required to display animated sprites from a BMP file.
SDL_gui - A library written in C++ for displaying and controlling user interface elements in an SDL application.
Simple DirectMedia Layer - A cross-platform multimedia library designed to provide fast access to the graphics framebuffer and audio device.
ZXLIB - An object-orientated C++ library for writing 2D games of the sort which used to abound on the ZX Spectrum and its contemporaries. ZXLIB is based on SDL.