Track Search Engine Spiders

Track Search Engine Spiders – Free Web Analytics Software for Apache Web Server
Use trackSpiders.cgi to track spiders from major search engines (Google, Yahoo, MSN). This free web analytics software will examine an Apache web server log and will display visits from Googlebot, Yahoo Slurp, and MSNBot. It takes an optional query string in the format s=ygm where each letter corresponds to the search engine spider for the major search engines. For example, specifying s=g will only display pages crawled by Googlebot.