Sites and apps similar to Desmos Geometry Calculator include GeoGebra, which is free. Other options are GeoGebra Discovery, Winplot, The Geometer's Sketchpad and Geometry Expressions. In total there are five Graphing Calculators like Desmos Geometry Calculator for Windows, Mac, Linux, Android and iPhone.
GeoGebra is free and multi-platform dynamic mathematics software for learning and teaching. It has received several educational software awards in Europe and the USA.
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GeoGebra Discovery is an experimental version of GeoGebra. It contains some bleeding edge features of GeoGebra that are under heavy development and therefore not intended for every day use yet, so they are not included in the official GeoGebra version.
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"Winplot is a free graphing utility that was written by Richard Parris, a math instructor at Phillips Exeter Academy in Exeter, New Hampshire. Sadly Richard passed away in 2012. After Richard's death the program was still available for a number of years on the Exeter...
Sketchpad® Dynamic Geometry® software gives students a tangible, visual way to learn mathematics that increases their engagement, understanding, and achievement. And it's not just for geometry.
Geometry Expressions is the world's first interactive symbolic geometry system. Create geometric figures using symbolic constraints and produce measurements not only numerically but also symbolically.
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