Add auto completion to search fields and any text input field you like. See what your site users are most interested in.
Use Page-Names, Meta-Titles, Meta-Keywords or Page-Tags of all pages or define additional words and phrases to create a stock of auto completion values. While a user is typing in a search word, she/he will be offered a list of words and phrases out of this stock to complete the typing.
Use Google's auto completion to complement your own values.
Track the inputs of your users and add the most used phrases to the stock of auto completion values.
Supports multilingual sites. Restrict auto completion values to specific languages.
The auto completion values can be stored inside the page's html code, which allows for a fast reaction time but results in a higher page load, or can be retrieved by ajax calls.
Auto completion can be added to any text input field. It will be added to the standard search block by default. For more on this visit the documentation.
If you're just looking for Google's auto completion functionality, the Google Auto Completion add-on might be more interesting for you.