GRASS GIS is described as «(Geographic Resources Analysis Support System) is an open source, free software (FOSS) Geographical Information System (GIS) with raster, topological, vector, image processing, and visualization functionality» and is a GIS software in the travel & location category. There are more than 25 alternatives to GRASS GIS for a variety of platforms, including Windows, Online / Web-based, Linux, Mac and Android. The best alternative is QGIS, which is both free and Open Source. Other great apps like GRASS GIS are PostGIS, OpenLayers, ArcGIS and SAGA GIS.GRASS GIS alternatives are mainly GIS Software but may also be Map Services. Filter by these if you want a narrower list of alternatives or looking for a specific functionality of GRASS GIS.
