TSEP is a simple search engine for your website and is free of charge. SEP provides an installer to make integration and smooth and painless as possible. With only two lines of code you can add TSEP to your website and into your layout, it is as easy as that.
TSEP requires a MySQL database to store all indexation data
Zoom is the easiest way to add a powerful custom search engine to your website, intranet, or CD-ROM and DVD
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.