IRcMap C2 is a Java applet to show tree structures such as networks, data structures, or enterprise structures. It is based on the idea of the irc-hispano server map.
HTMLPerlSETI uses the SETI::Stats Perl module to gather statistics about the UNIX SETI@home client and formats them as an HTML table.
A relational data browser.
An online interactive tutorial and free text assesments.