Web publishers with larger sites need to contact Google for pricing. Currently, thousands of businesses use Site Search, including Adobe and Con Edison, according to Mangtani.

A less sophisticated Web hosted site search service called Custom Search Engine AdSense for Search is free and requires Web publishers to carry Google ads.

Google also sells the Mini and Search Appliance computers, which use Google search engine software to index both a company's publicly available Web pages as well as internal files and documents with access restrictions.