ATLAS of Finite Group Representations - http://web.mat.bham.ac.uk/atlas/
Representations of many finite simple groups and related groups such as covering groups and automorphism groups of simple groups. Available by FTP in alternative formats: Meataxe ASCII, Meataxe binary, and GAP. |
Collapsed Adjacency Matrices, Character Tables and Ramanujan Graphs - http://www.math.rwth-aachen.de/~Ines.Hoehler/
A database of character tables of endomorphism rings. |
Groups of Small Order - http://www.math.usf.edu/~eclark/algctlg/small_groups.html
A list of isomorphism classes and further information on groups of order up to 30, by John Pedersen, University of South Florida. |
Small Even Order Groups - http://www.csse.uwa.edu.au/~gordon/remote/cubcay/
Generators for small even ordered groups from 1 to 1000. Files use gzipped extensions and require downloading. |
Test Polynomials for Galois Groups - http://world.std.com/~jmccarro/math/GaloisGroups/GaloisGroupPolynomials.html
A table of polynomials for Galois groups over the rational numbers with degree up to 9. The table includes links to additional information for each equation. |