Once in a while I see tips and tools created by Cre8asiteforum members. Here are four, listed in alphabetical order by the name of the tool.

Back Link Analyzer
Back Link Analyzer is a free link popularity / link analysis tool. It shows what anchor text is linking into a page or site.
http://tools.seobook.com/backlink-analyzer/
by seobook

Deep Link Calculator
Deep links are incoming back-links to a specific page within the website. This is in contrast to a link to the website’s root.
http://ekstreme.com/deeplinkratio/
by eKstreme

Keyword Difficulty Tool
Use to measure the relative difficulty of optimizing for a particular keyword phrase at Google. Scores are given as a percentage and are based on the relative level of difficulty. The report also contains all of the information figured into the final score.
http://www.seomoz.org/tools/keyword-difficulty-tool.php
by randfish

SEO Analyzer
The SEO Analyzer focuses on: web standards; semantic structure; obsolete and deprecated HTML; improper use of table elements; inline styles; download size and time; outgoing links and top keywords.
http://www.sitening.com/tools/seo-analyzer/
by the team at Sitening, including jonhenshaw

Enjoy!