DNHTTPD is a lightweight and high performance HTTP server implemented in Perl. It supports the use of virtual hosts and runs CGI scripts. It's extremely simple to set up and configure, and performs well under heavy load.
Re: perl > it's fully written in perl. this should > be included in the description. There you go ;)
A tool to easily convert an Oracle database to a PostgreSQL database.
A fully-functional PHP Datagrid in just seven lines of code.