RiSearch PHP is a fully functional search script for small to medium sites and is fast enough to search 5000-10000 of pages in less then one second. RiSearch is an indexing search engine, which means that it will index your site first and then create a database with all words from your pages for faster search. Risearch provides a full-text search script and an index of all words contained within a document except small words and common words (this can be defined in the config file).
RiSearch can create an index using either binary files or MySQL which allows for a great deal of flexibility.
Using this script you can be up and running your own Google search engine in just minutes and it's FREE! The Google Search Engine script is one of best ways to make use of the Google web API using PHP and nusoap. Best of all the Google Search Engine script only takes a minute to configure. Just upload your files, enter your web sites title, Google Key and you are up and running your own google search engine
Search Scripts
greasemonkey user scripts! For the uninitiated, greasemonkey is a Firefox extension that lets one modify a web page with javascript in powerful ways. This means that to install the user script, you must first install the greasemonkey extension, and then the script into it. The script recieves new features first, and sometimes only, and there are a lot of other fantastic user scripts to do amazing things like this, so I suggest you use greasemonkey