HouseSpider is a Java applet that adds indexing and search capability to Web sites. It can search by two methods: by spidering through the site, or by searching a cached index file. Spider-searching is slow, but very easy to set up and requires no maintenance. Cache-searching requires only a little more attention to set up and is sometimes even faster than CGI programs. HouseSpider also supports compression of the index file and boolean searches. Translations for several languages are provided, and it can handle Web sites in any language or encoding.
phpODPWorld is a package that allows you to display everything or any category from dmoz.org or ODP using RDF. It contains scripts that parse and insert the RDF into a database and a script that displays and searchs the categories. They features support for internationalization, caching through the use of the Smarty template engine, and the use of CSS for styling the display of categories.