Freeware for the visualization of atomic structure and process in the cosmos.

A free program allowing Compass and Ruler constructions. Now also available in Java.

The home site for Cabri Geometry, a dynamic geometry package .

Create dynamic geometrical figures using Cabri and publish them as Java applets.

Cinderella is a Java based interactive geometry tool. The only available tool that gives correct solutions to typical geometrical problems.

A page describing some Cabri macros relating to hyperbolic Geometry in the Poincare disc model.

Software for creating and printing drawings, including conicsections, color fillings in Monge's projection and axonometry.

A visual learning environment (full-curriculum, Mac/Windows) that helps students explore and understand geometry.

A set of mathematical environments for computing, visualizing and experimenting with geometric objects; built with the OpenGL/Mesa library and the GTK+ user interface.

A Java program in solid geometry. Solids can be measured, cut, drawn upon. 60 sample problems with resolutions.

Family of geometric computing servers execute a variety of geometric algorithms on behalf of remote clients, which can be either users interacting through a Web browser interface or application programs connecting directly through sockets.

An interactive geometry program for Windows. Evaluation version free to download.

GEUP is an interactive geometry tool. Lets you dynamically explore Mathematics, build mathematical models of real world or create interactive mathematics presentations.

A collection of mathematical programs, with particular reference to geometry.

A free dynamic geometry package for Windows, PowerMac and Linux. Like Cabri, but in Smalltalk (and smaller). Source available : you can extend it as needed !

KSEG is an Open Source program for interactively exploring geometric constructions which can be used to teach geometry in the classroom or for personal enjoyment.

A free trigonometry solving program for Windows.

Applet that draws the famous Lissajous Figures, with mathematical explanations about it, by Geo Doubek.

Apple Macintosh (OS 8.6-OS X) freeware program for drawing, printing, and exporting spirograph patterns. Includes related links.

Users of geometry software programs like Cabri Geometry II may share tips and advice at the geometry-software-dynamic discussion list.

Many Cabri files aimed at high school level geometry.

Interactive application for solid geometry with 250 built-in problems. Simulates ruler, compass, protractor and other tools. Solids can be cut, displayed differently, rotated, joined again.

Qhull for computing the convex hull, Delaunay triangulation, Voronoi diagram, and halfspace intersection about a point.

A Mathematica package for doing tensor calculations in differential geometry.

Unifpack is a set of programs and C libraries designed to help in the study of Riemann Surfaces.

Free Mathematica package for explicit tensor calculations in Riemannian Geometry.

Geometrical shareware software. Anyangle (Windows/DOS) finds answers to problems involving triangles. Partydot creates patterns.

Computer algebra system for polynomial computations. Free download.

An on-line tool for understanding and measuring symmetry.

This Resource Center supports users of The Geometer's Sketchpad "Dynamic Geometry" software. Contents include a freely-downloadable demo and Java versions; research bibliography; online activity guide; technical support center.

Mathematica package for doing tensor and exterior calculus on differentiable manifolds.

A java applet that lets you input a surface function and view the surface interactively in real time.

a tool for describing geometric constructions and making digital illustrations in LaTeX and bitmap format.