Kau-Boy's AutoCompleter free WordPress plugin

As you can choose between Prototype and jQuery, you can just take the framework you prefer or use the most. You can also set your own sytles without losing these settings in case the plugin is updated. The results are shown right under the search field. The search string is highlighted in the title and/or the content. You can also cutomize the ID of the search field and the number of choices. A list of all of my plugins can be found on the WordPress Plugin page on my blog kau-boys.de.