Thelibraryhistoricallyusedtowrapallegro4,SDL1.2andsubsequently[Allegro5](https://github.com/liballeg/allegro5). This allowed for using SDL to build [Paintown](https://www.github.com/kazzmir/paintown) on platforms such as the Wii.
SinceseparatingRTech1from[Paintown](https://www.github.com/kazzmir/paintown) it now only depends on [Allegro5](https://github.com/liballeg/allegro5) as its backend.