I just added Index Data's SimpleServer [1] to the list [2] of Perl software at perl4lib. Thanks to Anders Mortensen for suggesting it.
SimpleServer is essentially a Perl module that allows you to easily build your own Z39.50 server from Perl. It has exciting possibilities for building Z39.50 interfaces for your local home brewed databases, and for building Z39.50 bridges to other search interfaces. There's an example of Zoogle (a Z39.50 interface to Google) on the SimpleServer webpage. //Ed [1] http://www.indexdata.dk/simpleserver/ [2] http://perl4lib.perl.org/