TdhGIS is described as «Vector Based Spatial Analysis» and is an app in the photos & graphics category. There are more than 25 alternatives to TdhGIS 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 TdhGIS are PostGIS, OpenLayers, ArcGIS and GRASS GIS.TdhGIS 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 TdhGIS.
