An Algebraic Combinatorics Environment for MAPLE providing functions to work with classical structures in algebraic combinatorics. Free download.

Using combinatorics to solve structured linear systems of equations.

Combinatorial analysis, discrete mathematics and computer algebra are the main interests of the Algorithms Projects. The packages let you define combinatorial structures; manipulate the associated generating functions, functional equations or recurrences; study their asymptotic behaviour.

Free Software for Win 9X,NT on Graph Theory by Vitali Petchenkine. Procedures: Metrics of the graph; Paths and cycles; Colorations; Automorphism group; Minimal spanning tree; Shortest paths; Max. Capacity path; K Shortest paths; Salesman problem; Maximal flow; Critical path; Reports for Graphs; Print.

Software for visualizing graph algorithms. Free under GPL. Unix, Linux, MacOs ad Windows versions.

Software for computing Steiner trees. Written in ANSI C, includes the public domain LP-solver lp_solve.

C++ library of graph optimization algorithms with a GUI for editing, running and tracing the algorithms.

A GAP package for computing with graphs; primarily designed for the efficient construction and analysis of graphs related to groups, combinatorial designs and finite geometries.

By using the DSATUR algorithm, this php/form colors any graph in the Dimacs format.

A tool for graph theory, having a generator and offering various algorithms: shortest paths, network flows, maximal clique, optimal coloring etc.

Three algorithms written in NESL for finding separators of graphs, in order to compare the quality of the cuts.

Tool for investigating Graph Theory, with a GTK interface. Free under GPL. Unix, source code in C++.

A java applet for researching what is known about particular graph classes.

Free Java class library that provides mathematical graph-theory objects and algorithms.

A general-purpose, extendible computing environment in which discrete mathematical objects representing real world problems can be easily manipulated and visualized.

Graph, mesh, and hypergraph partitioning software.

A program for computing automorphism groups of graphs and digraphs. It can also produce a canonical labelling.

NetworkX (NX) is a Python package for the creation, manipulation, and study of the structure, dynamics, and functions of complex networks.

Programs for generation of certain types of planar graph, generated in such a way that exactly one member of each isomorphism class is output without the need for storing them.

A system for manipulating discrete mathematical structures: a Mathematica based collection of operations with interface to external packages and programs.

We are pursuing research in the area of new parallel methods for graph partitioning and incremental graph partitioning. Efficient methods for graph partitioning and incremental graph partitioning are important for parallelization of a large number of unstructured and/or adaptive applications.

John Stembridge's Maple packages for symmetric functions, posets, root systems, and finite Coxeter groups.

LEDA is a library of the data types and algorithms of combinatorial computing.