This document contains a history of this page, from the current version to the earliest one available.
| Version | Name | User | Date | Time | |
| current | useful apps | www-proxy.TechFak.Uni-Bielefeld.DE | 22 September 2004 | 10:10 am | |
| useful apps | dialin-212-144-034-167.arcor-ip.net | 7 April 2004 | 12:14 pm | ||
| useful apps | max2-243.dialin.uni-hamburg.de | 1 February 2004 | 1:01 pm | ||
| useful apps | max2-243.dialin.uni-hamburg.de | 1 February 2004 | 1:01 pm | ||