A PHP search engine for your website and web analytics tool. GNU GPL3
Easy Spider is a distributed Perl Web Crawler Project from 2006
Self-hosted search engine with web service to share discoveries with
IXSF Search is a web interface for Windows Indexing Service
An Open Source "product catalogue" that is customizable and versatile.
Very configurable web downloader
An open source search engine with RESTFul API and crawlers
Very simple implementaition of list poisoning idea.
Small, fast and flexible Content Management System for PHP / MySQL
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
ISO - Customized version of dcm4chee 2.17.3 for MySQL.
Xaraya is a web application framework and CMS written in PHP.
advanced search for mediawiki
A database engine entirely in JavaScript (AJAX)