Net Mechanic

http://www.netmechanic.com/cobrands/zd_dev/

NetMechanic's HTML Toolbox is a free online tool that can find errors in your HTML code. HTML Toolbox will validate your Web pages against the HTML standards and point out browser compatability issues that affect how visitors see your site. It will also find coding errors and offer design tips on how to improve your site.

Tune up

http://websitegarage.netscape.com/O=wsg/tuneup_plus/index.html

Performance is critical for a Web site's success. Tune Up delivers comprehensive, automated diagnostics on your Web page. Run anytime to find hidden problems on your site.

GIF Lube

http://websitegarage.netscape.com/O=wsg/turbocharge/gif_lube/index.html

Are you losing visitors because your Web page takes too long to load? GIF Lube will decrease your load time quickly and easily by optimizing your graphics.

Research Summary

http://www.bruceclay.com/Research318.htm

This program is designed to query the major search engines and produce a report of the ranking of various pages. Specify your research keywords and the top 10 results are reported for each engine, combined and sorted by what pages appear most often in the top 10

Keyword Density Analyser

http://www.bruceclay.com/Analysis318.htm

This tool will list the top keywords plus all words used in your META tags. This report presents the density for each word in the various categories: META TITLE, META Description, META Keywords, ALT Tags, Comments, Heading Levels, and two categories for Body copy. Following our specified methodology, you would review these reports and web pages to see what you need to change or add to your pages.

Reciprocal Link Tool

http://www.bruceclay.com/Links318.htm

This tool will list pages from the major search engines that link to any specified web site.

You would use this to validate links to your site, as well as to see who is linking to your competition and thus might be great candidates to link to your site. Simply put in the competitors web site, and investigate the links that we find.