Splash mapper is described as 'Splash is a free video mapping software, published under the GPLv3 licence. Splash takes care of automatically calibrating the videoprojectors (intrinsic and extrinsic parameters, blending and color), and feeding them with the input video sources' and is a projection mapping app in the development category. There are eight alternatives to Splash mapper for Mac, Windows and Linux. The best Splash mapper alternative is Resolume Avenue. It's not free, so if you're looking for a free alternative, you could try QLab or MapMap. Other great apps like Splash mapper are MadMapper, HeavyM, VPT and MAPIO.