App: OPTi
Developer: Masaaki Wada
Genres: Education

OPTi is a research tool in the field of Kleinian groups. OPTi visualizes quasi-conformal deformations of the once punctured torus groups by interactively drawing the isometric circles, the Ford region, the limit set, etc.

If this explanation does not make sense to you, you can still enjoy OPTi.  Just drag the red and blue dots and see what happens.

Release notes:
A minor bug fix in the Demo menu.