Heathco Search Engine  

Heathco Search Engine is a richly-featured PHP search engine that uses MySQL as the database backend. This small, but powerful search engine is ideal for almost any web site. Not only can it index and search by meta data, page content, and titles, but allows for unlimited searches to be setup to index various web pages and portions of your site. Search results can be customized to suit your site's needs through the use of templates driven by CSS styles. Setup and configuration is a breeze through an online password-protected web page.

Hosting Requirements: PHP 4+
Database: MySQL 3.23+
Price: $99.99

   Site Search Pro  

Site search solution. Features: Easy installation and instant work - Powerful templates management options - Full layout and design control - Built-in filter and rules - Easy-to-customize data output and more.

Hosting Requirements: Unix, Windows; ASP, PHP
Database: MySQL
Price: $29

   ADAPT URL  

The tool is a PHP script that sits on top of your web server and converts URLs on the fly, both Incoming URL Conversion and Outgoing URL Conversion: the web server will still deal with dynamic URLs, while the "outside world" (search engines and/or visitors) will only see static URLs. It will be enough to make you site visible and rankable by the search engines.

Price: $95

   PowerPPS PPC  

PowerPPS is a PPC (pay per click) and PPS (pay per search) engine. The way it works is very easy: Website owners pay for their listings. The higher the bidding, the higher is the position in the search results and the more traffic they get. On the other hand there are affiliates, who generate traffic and get therefore money.

Hosting Requirements: PHP 4.1.x+
Database: MySQL 3.2x+
Price: $49

   Softbiz PPC Search Engine  

A feature-enrich Script for your web site. You can run your own PPC search engine with this script. Members can signup to add there site to your search engine. They can define keywords relevant to their web site and the price they are ready to pay for each visitor they get through your search engine. Administrator can put a restriction to disallow bids below a certain amount. Admin can also define different web site categories. Members can then add their sites to these category and define the bid for their listings in each category.

Hosting Requirements: PHP
Database: MySQL
Price: $69

   My DiRRectory  

With My DiRRectory, you can have a basic search engine on your own website! Using PHP and one MySQL database, you can allow other people to submit their site to your searchable directory.

Hosting Requirements: PHP
Database: MySQL
Price: Free

   SearchPilot Pro  

SearchPilot Pro is an instant search engine script that helps you start your own, fully automatic, turnkey website where each and every click will earn you money. It parses results from two of the most popular pay-per-click search engines - SearchFeed and RevenuePilot. These results are then shown in your website, with your affiliate ID embedded so that you will earn money for each and every click.

Hosting Requirements: Unix/Linux; PHP
Price: $49.95

   SpiderBlair  

Tool for getting search engine spiders to notice and list your site. You can make your site look like it has hundreds of pages of content. Just create some simple text files with your keywords and let the script generate all the links for you!

Price: Free

   Jade  

Jade is a Directory and Search Engine application that is simple and easy to use. It works with templates for making easy your changes to the look and feel of your directory. Another feature of the application is that it can run in "dynamic mode" or generate the "static" HTML pages in your server. Also, you can configure various meta tags for each page, thus giving you more control over how you are seen by other search engines.

Hosting Requirements: PHP
Database: MySQL
Price: Free (GPL)

   The Search Engine Project  

A simple yet very powerful and fast search engine in PHP with MySQL database. TSEP is built to index your site so it can be searched later within seconds.For MySQL 4.0.1+ boolean,for lower versions "normal" search is done.

Hosting Requirements: PHP
Database: MySQL
Price: Free (GPL)