dynamic geometry software with highly ergonomic UI

 Based on the C.a.R. (Compass and Ruler) project, CaRMetal includes
 all of its functionalities - or almost. It propose a different approach
 from the graphical interface point of view.
 .
  - Ruler and compass constructions can be changed by dragging one of the
 basic construction points. The construction follows immediately. The
 student can check the correctness of the construction and gain new
 insight.
  - Tracks of points and animated constructions can help to understand
 geometric relations. Tracks can be used as new objects to explore.
  - With the macros of C.a.R. very complicated constructions become
 possible. Macros are also a way to organize the geometric thinking.
  - Hiding construction details and using colors make constructions
 clearer to read. In C.a.R. lines and circles can also be reduced to the
 relevant points.
  - Arithmetic computations, numerical solutions, curves and functions
 go beyond classical constructions. It is even possible to construct in 3D
 using advanced macros.
  - Other geometries, hyperbolic or elliptic, can be explored.
  - Scripting (javascript based) of figures.