Gato - the Graph Animation Toolbox - is a software which visualizes algorithms on graphs. Graphs are mathematical objects consisting of vertices and edges connecting pairs of vertices: think of cities as vertices and interstates as edges connecting two cities. Algorithms might find a shortest path - the fastest route - or a minimal spanning tree or solve one of other interesting problems on graphs: maximal-flow, weighted and non-weighted matching and min-cost flow. Visualisation means linking cause - the statements of an algorithm - immediately to an effect - changes to the graph the algorithm has as its input - by terms of blinking, changing colors and other visual effects.

Gato is copyright (c) 1998-2011 Alexander Schliep, and Winfried Hochstättler and copyright (c) 1998-2001 ZAIK/ZPR, an institute at the Unversität zu Köln. Gato is freely available under the LGPL and runs on all plattforms Python and Tcl/Tk run on, which includes at least Unix, Linux, MacOS X and Windows 98 onwards.

Gato is used in CATBox (the Combinatorial Algorithm Toolbox - an interactive course on discrete mathematics) available from Springer Verlag and has been used for courses on algorithms - both in the Computer Science and the Mathematics department - taught at the University of Cologne, the Technical University Cottbus and Free University Berlin. You find binary releases at http://schliep.org/CATBox/

The development of Gato is hosted on Sourceforge. Thanks for the support.