» MING - Computes the MD energy of a polygonal knot. Available via ftp.
» OPTi - Macintosh freeware which visualizes quasi-conformal deformations of the once-punctured-torus groups. It interactively draws the isometric circles, the Ford region, and the limit set.
» SNAP - Exact computation of hyperbolic 3-manifolds and their arithmetic invariants. Written by O. Goodman in an ARC-funded project of Hodgson and Neumann.
» SnapPea - A program for creating and studying hyperbolic 3-manifolds. Free source available in C.
» SnapPea PC - SnapPea for Windows 95/98/NT by A.C. Manoharan.
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