Digital marketing tools

 SEO Tools:

http://www.googlerankings.com
http://www.keyworddensity.com
http://www.mikes-marketing-tools.com/free-marketing-tools.html
http://seodigger.com
http://tools.seobook.com
http://www.alexa.com
http://www.webmaster-toolkit.com
http://www.iwebtool.com/tools
http://www.seocompany.ca/directory/top-web-directories.html
http://www.marketleap.com/publinkpop
http://www.googspy.com
http://www.linkpopularity.com
http://www.searchwho.com/sw5-spider.html

Keyword Tools:
http://www.nichebotclassic.com
http://www.goodkeywords.com
http://www.freekeywords.wordtracker.com
http://www.kwbrowse.com
http://www.ranks.nl/tools/spider.html
http://www.quintura.com
http://www.technobloggie.com/keyword-tool/index.php