iSearch2

iSearch is a tool for allowing visitors to a website to perform a search on the contents of the site. Unlike other such tools the spidering engine is written in PHP, so it does not require binaries to be run on the server to generate the search index for HTML pages.

Try it our using the search box above, for example, try searching for the terms "download" or "install".
Features
Spider engine written in PHP - there are no binaries to run on the server.
Runs in PHP safe mode.
Performs simple page match scoring and ranking.
Can spider subdomains or multiple domains.
Allows multiple spider entry points.
Versatile page inclusion/exclusion, including robots.txt parsing with Google extensions.
Parts of pages (e.g. menus) can be excluded from indexing.
Can generate a site map automatically from the search index.
Auto Spider feature ensures that your search index is kept up-to-date automatically, even if you cannot run "cron" jobs on your web server.
Customisable by inserting your own HTML code before and after search results.
Multiple languages.