SEO TOOLS that works

There is an online SEO tools for online marketer which we think very useful to me and I am sure it will help you too very much.

Seo Tools
Similar Page Checker
Search Engine Spider Simulator
Backlink Anchor Text Analysis
Backlink Builder
Backlink Summary
Keyword Density Checker
Redirect Check
Link Price Calculator
Reciprocal Link Check
Check Yahoo WebRank

There is also one tools i like because it can predict your PR
http://www.seomoz.org/linkscape
This is still beta but the data is for me 85% accurate.