Space Group ExplorerThis program gives you immediate access to much of the information which is available in the International Tables for Electron Crystallography, on-line in your own PC.
The program is based on the program sginfo from Ralf W. Grosse-Kunstleve, Laboratory of Crystallography, ETH Zürich, Switzerland. Ralf's E-mail address is firstname.lastname@example.org, and he has a site at http://www.csb.yale.edu/sginfo/ with full information about sginfo.
Space Group Explorer is freeware, and can be downloaded by clicking here. (78.5KB, zipped file).