Some SEO Tools:
PageRank checker
Verify the PR of you page on multiple datacenter at the same time!
GoogleBot checker
Verify that the GoogleBot that crawls your pages is the real one checking his IP with this tool
Domains SEO valuer
Make a classification of domains analyzing the best SE about a group of keywords
Linkscape
A professional quality inlink tool that uses patent-pending SEOmoz metrics. Inlinks, anchor text distribution and more. Linkscape’s metrics are also available in the Site Intelligence Service API.
Trifecta
Measures metrics to estimate the relative popularity and importance of Page, Blog or Domain. Trifecta replaces SEOmoz's Page Strength tool.
Backlink Analysis Tool
Get an advanced look at the keywords other websites are linking to you with.
Google SERPs xml converter
Now you can convert the google serps in Xml files in order to manage/store them