Cost / License
- Freemium
- Proprietary
Platforms
- Windows

KSEG is described as 'Free interactive geometry program for exploring Euclidean geometry. It runs on Unix-based platforms (according to users, it also compiles and runs on Mac OS X and should run on anything that Qt supports)' and is an app. There are more than 10 alternatives to KSEG for a variety of platforms, including Windows, Mac, Linux, iPad and iPhone apps. The best KSEG alternative is GeoGebra, which is free. Other great apps like KSEG are GnuPlot, Graph, GeoGebra Discovery and GeoGebra CAS Calculator.

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.
