Copyright 2005 Tinu AbayomiPaul
In this three part article, you’ll find many tools that any webmaster can use to monitor your site’s search engine position, and use to increase visibility of your site in major search engines like Google, Yahoo and MSN.
URL Trends http://www.urltrends.com/
Most of coverage I've seen focuses on ability of UrlTrends to allow you to "View Any URLs Google PageRank, Alexa Rank, Popular Search Terms and Incoming Links".
And that's a great thing, to be able to see all of that from one place. But one great thing missed about this tool are that you can subscribe to changes to results via RSS -hands off monitoring of your site.
Fagan Finder’s URL Info http://www.faganfinder.com/urlinfo/
This online gadget is like Swiss Army knife of site information, giving you one-page access to dozens of pertinent check-ups. But monitoring relevant search engine information like your backlinks, or cached pages in a search engine are just tip of iceberg.
You can use URL Info to check that your HTML code is validated, translate your page, and if you’re a blogger, discover where your site is mentioned in blogosphere.
Spannerwork’s Spider Simulator http://www.spannerworks.com/spidersimulator.0.html
Ever wondered what your site looks like to search engine spiders that crawl web, looking for information to include in their databases? Go to this page to see what information is seen by spider and what it skips over.
Spannerworks.com can also help you figure out how to troubleshoot content that seems like it should show up to a spider but doesn’t, with its HTTP viewer. They also have a tool that will analyze your keyword density.