SEO - A list of useful online free-to-use tools for webmasters

A list of links to useful, frre-to-use online tools of a particular interest to webmasters.

• http://www.websiteoutlook.com/

Provides a 'Website value calculator' that calculates an 'estimated worth' of any website probably based on the website's daily ad revenue and other statistics. Not sure how they do this but I think its a good quantifiable way to keep an eye on your competitors ;)

• http://www.alexa.com/

A popular and reliable web tool that provides web traffic statistics and trends for a given website. Also allows you to compare traffic trends with other websites as well.

• http://browsershots.org/

One of my favourites and a real boon to webmasters. A free tool that generates free screen shots of your website in various browsers running in various OSs (think about a combination aand am sure you will find it here).

• http://whois.domaintools.com/

Shows you the whois record for a given domain name along with some other interesting domain statistics like the Registry data, Server data etc.

• http://www.ranks.nl/tools/spider.html
• https://adwords.google.com/select/KeywordToolExternal
• http://freekeywords.wordtracker.com/
• http://tools.seobook.com/keyword-tools/seobook/