
ptolemy.unhyperbolic.org
UnhyperbolicModule is part of the popular 3-manifold software SnapPy. And can be used to find boundary-unipotent representations of a 3-manifold into PGL(N,C) and compute invariants such as volume and Chern-Simons invariant. The Ptolemy varities can be computed using Magma. Or retrieved automatically from our precomputed database. Data for SnapPy manifolds. Our data contains the primary decompositions of the Ptolemy varieties as well as the volume of each representation (see notes and caveats. And Talk at ICERM.
http://ptolemy.unhyperbolic.org/