Open Source PHP Search Engines

OpenSearchServer is a powerful, enterprise-class, search engine program. Using the web user interface, the crawlers (web, file, database, etc.) and the client libraries (REST/API , Ruby, Rails, Node.js, PHP, Perl) you will be able to integrate quickly and easily advanced full-text search capabilities in your application: Full-text with basic semantic, join queries, boolean queries, facet and filter, document (PDF, Office, etc.) indexation, web scrapping,etc. OpenSearchServer runs on Windows and Linux/Unix/BSD.

Ex-Crawler is divided into 3 subprojects (Crawler Daemon, distributed gui Client, (web) search engine) which together provide a flexible and powerful search engine supporting distributed computing. More informations: http://ex-crawler.sourceforge.net

Bookmark.inc is a PHP class that provides the essential functions to manage a bookmark. It provides an (multilingual) administrator interface, and allows the personalization of the bookmark visualization through a simple template system.

FTPSearch/Agent is a fully functional ftp indexing & searching engine for medium local networks (20-200 servers). Unique associative extend of searching allows you to garther much relevant results. FTPSearch/Agent is written in java and PHP and use MySQL

A Distributed Web Search System bassed on current high level nerual network ai for the rating algorithum and search direction.

a Solr Based Semantic Mediawiki Store

Xapian is a Search Engine Library, written in C++ with bindings for Perl, Python, PHP, Java, Tcl, C# and Ruby. Xapian allows you to easily add advanced indexing and search facilities to your applications. See www.xapian.org for more information.

list2db reads digested email files generated by the mailman mailing list software and converts them into SQL for a relational database. The project also includes a PHP frontend for users to search and browse archived list emails.