A Custom Search Engine allows you to create a search engine and host it on your site using the Custom Search element. It’s entirely free.
Google Site Search is designed primarily for businesses looking to create a highly customized and Google hosted site search solution. For a fee, Google Site Search enables customers to enjoy technical support, customization of search results using our XML API, a tailored look and feel, optional Google branding, and no ads next to the search results.
|Feature||Custom Search Engine||Google Site Search|
|Look and feel|
|Customize results look and feel using XML||No||Yes|
|Ads on results pages||Yes||Optional|
|Google branding on results page||Yes||Optional|
|Access to support forum||Yes||Yes|
|Search the entire web||Yes||No|
|Image search only||No||Yes|
|On-demand indexing quota||100 URLs||Flexible, depending on account type|