F15.Com provides a variety of webmaster related tools for webmasters around the world.
PageRank Checker: Check your sites' Google pagerank. This tool allows webmasters to see their pagerank without using the Google toolbar.
Links Checker: This tool reports the status of a link (200, 404, 401, etc.) and reports it to the webmaster. Great for finding broken links, or working links on any page.
Meta-Tag Generator: Generates meta tags to place in your page headers.
SE Indexed Pages: Indexed Pages tool can be used to quickly check the number of pages that a particular web site has indexed in the following search engines: AlltheWeb, AltaVista, Google, HotBot, Lycos, MSN Search, and Yahoo!.
Link Popularity: Link Popularity is an all in one tool to check the number of pages that link to you in AlltheWeb, AltaVista, Google, HotBot, MSN Search, and Yahoo!
SE Position Report: Search Position tool can simultaneously retrieve a site's position in the search results of the 4 search engines(Google, Yahoo, MSN & Altavista) for any keywords you choose.
Whois Check: Whois tool will allow you to check the status of a domain name and see if it is available for registration.