Easy Spider is a distributed Perl Web Crawler Project from 2006
An Open Source "product catalogue" that is customizable and versatile.
Very configurable web downloader
An open source search engine with RESTFul API and crawlers
Group file share with advanced text parsing capability for easy search
Metasearch engine for P2P private torrent trackers.
Data migration/conversion library based on STX and XSLT transformation
Xaraya is a web application framework and CMS written in PHP.
A database engine entirely in JavaScript (AJAX)