Here is a useful list of resources:
Google Webmaster Tools:
http://www.google.co.uk/webmasters/
Google Analytics:
http://www.google.com/webmasters/tools/
Keyword Research Tools:
https://adwords.google.com/select/KeywordSandbox
http://www.webmaster-toolkit.com/keyword-research-tool.shtml
http://www.webconfs.com/website-keyword-suggestions.php
http://www.googleduel.com/original.php
Link Popularity Tools:
http://www.assertive-media.co.uk/link-popularity-tool.html
Website Header Checker:
http://www.webconfs.com/redirect-check.php
Reciprocal Link Tools:
http://www.assertive-media.co.uk/reciprocal-link-checker-tool.html
http://linkchecker.etown-webdesign.com/
Page Rank Tools:
http://www.assertive-media.co.uk/advanced-page-rank-tool.html
http://www.seochat.com/seo-tools/future-pagerank/
Domain Tools:
http://www.webuildpages.com/cclass/
http://www.webconfs.com/domain-age.php
Ranking Report Tools & Keyword Tracking:
http://www.advancedwebranking.com
http://www.mcdar.net/dance/index.php
http://www.prsearch.biz/
XML Site Map Generator:
http://www.xml-sitemaps.com/
Backlink Analysis Tools:
http://www.webconfs.com/anchor-text-analysis.php
http://www.yahoo.com
http://www.webmaster-toolkit.com/link-appeal.shtml
http://www.elixirsystems.com/tools/linkpopularity.php
