Google AJAX Search API
Google has released a new Ajax Search API. This new API allows you to build custom search pages that utilizes Ajax to display results from several Google sources without reloading the page.
The API is very powerful and allows several options to customize not only the sources that are searched, but how the results are displayed and used. Results can be returned in linear or tabbed displays. Local, Web, Video and Blog searches are supported.
Check out the Google AJAX Search API and make sure to subscribe to the Google AJAX Search API Blog to keep up to date with all new information and releases.