GeoGebra is described as «is free and multi-platform dynamic mathematics software for learning and teaching. It has received several educational software awards in Europe and the USA» and is a very popular app in the education & reference category. There are more than 25 alternatives to GeoGebra for a variety of platforms, including Windows, Mac, Linux, Online / Web-based and iPad. The best alternative is Desmos, which is free. Other great apps like GeoGebra are fxSolver, SciDaVis, Matplotlib and Grapher.GeoGebra alternatives are mainly Spreadsheet Apps but may also be Calculators. Filter by these if you want a narrower list of alternatives or looking for a specific functionality of GeoGebra.