Google Keyword Tool (PPC)
https://adwords.google.com/select/KeywordToolExternal

Overture Keyword Selector Tool (PPC)
http://inventory.overture.com/d/searchinventory/suggestion

Google URL Submission
http://www.google.com/addurl/?continue=/addurl

DMOZ – Directory
http://dmoz.org/help/submit.html

Traffic Rankings Tool
www.alexa.com

Web Site Analysis Tool
www.linkvendor.com

Keyword Density Analyzer
http://www.webseo.com.au/keyword-density-tool.html

Similar Pages Checker (SEO)
http://www.webconfs.com/similar-page-checker.php

Search Engine Spider Simulator
http://www.webconfs.com/search-engine-spider-simulator.php

Backlink Anchor Text Analysis
http://www.webconfs.com/anchor-text-analysis.php