Martyn's Mix Counters/Trackers - A small but growing list of currently FREE web counters and trackers that users can add to their sites. - http://www.martynhicks.co.uk/personal/html/counters/counters.html
Pacific Design Guild - Real time examples of all the free hit counters - http://www.pacificdesignguild.com/marketing/freehitcounters.shtml
Tracker test - Overview and comparison of free website visitor trackers. - http://tellertest.com/en/
Web Site Tracking Tools - List of web site tracking tools, both free and commercial. - http://www.cryer.co.uk/resources/websitetracking.htm
Free Stuff Center - Counters/Trackers - Reviews on free web counters and hit trackers so that you know who is coming to your web site. - http://www.freestuffcenter.com/sub/counterstop.html
Web Page Counters - Links to over 130 sites offering web page and stats counters and stats trackers. - http://www.merlet.com/counterlinks.htm
CounterGuide.com - Offers free web counters reviewed, as well as free counter cgi scripts and java applications. - http://www.counterguide.com/