The Map Library is a project of The Map Maker Trust charity, and supported by Map Maker Ltd., for the supplying of free GIS data. The project website also hosts free conversion software for raster and vector files. As of November 2008, the only data sets available were for the continents of Africa and Central America. The Map Library is a project of The Map Maker Trust charity, and supported by Map Maker Ltd., for the supplying of free GIS data. The project website also hosts free conversion software for raster and vector files. As of November 2008, the only data sets available were for the continents of Africa and Central America.