Offering various tools based on the Google API. Includes source code.

Takes two search terms and shows which one is the most popular according to Google. Implementation using PHP with source code available.

Displays a random web site from Google's archive. Powered by the Web API.

Webmaster tool for calculating the PR of a web site. Includes description of how PageRank works and related links.

Floating toolbar for Windows allowing you to conduct searches with Google. Includes FAQs, screen shots and system requirements.

Tool for comparing the search results of Google and Yahoo in the same page.

Search www/www2/www3 or the five Google data centers simultaneously. Can be used to check if the dance has begun.

Facilitates searching of all Google servers simultaneously. Includes additional options for German speakers. Requires frames.

Calculates how related two given words are by using the API. Requires the Mozilla browser.

Online SEO tool for monitoring Google's crawl rate. Offers both free service, and pay for service.