Website Marketing SEO Score Tool - A simple website analyzer with some helpful tips for your site
Page Rank Checker: Free Top Rankings Position Check many countries Google search engine results position (SERP tool) SEO web tool - A nice worldwide SERP checker.
Check Page Rank! - Nice PR checker and validator when exchanging/purchasing links
Backlink Checker - Nice but limited way to see what sites link to you and their associated PR's.
Copyscape - Search for Website Plagiarism and Duplicate Content Online - Check to see who is copying your stuff and take action.
https://adwords.google.com/select/Tr...timatorSandbox - Nice traffic estimator. Type in the keywords you want to estimate, maximize your budget and you'll see what Google sees as potential traffic. Usually used for Adwords but nice to use for estimating niche markets for website development.
Unlimited free .edu and .gov links - Nice article on link development for any niche.
SeoDigger.com - Gives a search estimate for specific keywords to your niche at different SERP standings. Nice.
Google Penalty Advice for Webmasters - Good list of things to be careful about so you don't get a Google penalty.
Making An RSS Feed - Search Engine Watch (SEW) - Article on creating an RSS feed for your site.
None of these sites are mine (I wish they were) but I have found them all useful in helping my sites SERPs and I hope they can help you.
...Paul, The Largemouth Herald