Free Online SEO Tools
SEO Tools:
Keyword suggestion from Google, up to 800 terms for each keyword
http://google.com/sktool
PR of pages in Google SERPs – you can set it to show only high PR
http://livepr.ezer.com/google_serps_pagerank_checker.asp
Backlink checker – 1000 results, shows PR, anchor text, eventual nofollow atr.
http://seoopro.com.au/free-seo-tools/link-checker/
Google analytics – detailed visitors statistics…