- Editors 101
- Some TeX resources.
- Andries Brouwer's descriptions of various interesting graphs and his tables of parameters for strongly regular graphs.
- Gordon Royle - cubic and strongly regular graphs, biplanes,...
- Ted Spence - strongly regular graphs, 2-designs, Hadamard matrices, two-graphs,....
- The Stony Brook Algorithm Repository.
- Cliquer, a program for finding maximum cliques in graphs.
- Joseph Culberson's graph coloring programs and related links.
- Brendan McKay - some very useful programs (nauty, gtools, etc.) and some vertex-transitive cubic graphs.
- Markus Meringer's regular graphs.
- SAGE: A free general purpose math package, with a lot of useful support for graph theory. It also provides access to many other useful packages.