PhpDig is a very small PHP search engine that uses a MySQL database on backend. Features: indexes both static and dynamic pages; Spiders almost all links in html content, in hrefs, areamaps, frames; and Full text indexing. It could index pdf and ms-office files using external binaries. 1.6.2 Update: Add support of others charsets than 8859-1, encoding 8859-2 added. PhpDig handles meta http-equiv cookie. Function phpdigTestUrl fixed. Css classes for classic mode fixed. Bug on noindex and nofollow fixed. Small API doc added. Error on database creation script on some versions of MySql fixed.

PHPSearch is a search script which replies on no outside programs. The script indexes you site into a text database. You have the option of either indexing from meta tags or a full index of all words. Ideal for small to medium sites. With only a few lines of code to edit it is very easy to install. Options include the ability to excluded words/files from the index. Version 1.7.7 includes many more user friendly and helpful error messages and a couple of bug fixes.

Zoom is a free package that adds a powerful, fully customizable search engine to your website, in a matter of minutes. There is no advertising, and no complicated server-side installation procedure. Simply click and index from your very own Windows desktop computer. Features include: "Google-like" context descriptions, wildcards and exact phrases, highlighting, detailed search statistics, spelling suggestions, synonyms, and more. Supports dynamically generated websites and multiple domains, and provides scheduling features for automatic indexing. Highly configurable. Runs on either shared or dedicated hosting environments. Available for PHP, ASP, JavaScript or CGI platforms. Commercial editions support enterprise-scale websites and PDF, DOC, XLS, PPT, RTF, WPD, SWF files.

MAZOT is an easy-to-install, fast, self-running, site search engine written in PHP. It supports several different types of searches: Free Search, Case Sensitive Search, Whole Word Search, and Exact Match Search, Boolean Search. Several other features are supported. Features a nice formatted output. It is suitable for small to medium sized websites.

iSearch is a tool for allowing visitors to a website to perform a search on the contents of the site. Unlike some other such tools the spidering engine is written in PHP, so it does not require binaries to be run on the server. META tags are supported, such as description, keywords and robots. iSearch performs result scoring, placing the highest ranking matches first. Works fine in PHP safe mode. Auto Spider feature keeps your index up-to-date without relying on cron jobs. Multi-language and style sheets for search results. Commercial licenses from £20/$40.

Easy to implement search this site search engine script. Comes with customizable template. No programming or database backend required (utilizes Google via the Google API). It can also give spelling suggestions for misspellings automatically (works for any word in any language, even ones not in dictionary).

TSEP is a free php search engine for your website! You can put a "Search this site" anywhere on your website and let people quickly find what they are looking for. TSEP is free of charge and open source software. TSEP is designed to be very easy to install and use. TSEP can be implemented into your layout with only two lines of code! (there is also a pre-made search page available) TSEP uses CSS for formating. TSEP uses indexing profiles. TSEP is localized! Multiple languages available. TSEP is supported by Installatron. TSEP supports (MySQL-) boolean search terms.

The Orca Search online search engine tool lets you build and maintain a database of internal and external site links which can be quickly searched through by visitors. This engine automatically and recurringly spiders links within a single domain or range of domains you specify. Fully automatic, with minimal maintenance, you can have a site search engine up and running within minutes! Features include: automatic spidering at intervals or via cron tab, search result categories, full-featured maintenance GUI, Google sitemap writing, offline javascript engine creation, latin accent matching, too many other options to list!

The CJ Website Search was written because there are no decent, free, fast website searches out there that use flatfile databases! The script although simple is highly sophisticated. As admin you have control of what is contained within the database. You add, edit, delete etc.. the links which can be to other websites not just your own. All you have to do is upload a few files and your away.

siteIndexer is a PHP/MySQL-driven complex search and indexing system for small and medium sites. It allows you to index your web pages content and puts it to the database. Also, includes a script to perform searches throught the database.