Tools

keyword density

• http://tools.davidnaylor.co.uk/keyworddensity/
• http://www.ranks.nl/tools/spider.html

Keyword suggesties

• http://ubersuggest.org/
• http://lsikeywords.com/cgi-bin/lsikw (LSI)
• http://www.kwmap.net/
• soovle.com
• http://www.seedkeywords.com/

 

Keyword combineren

• http://mergewords.com/

Artikelen

• http://www.slideshare.net/richardbaxterseo/keyword-research-for-professionals-smx-stockholm-2012
• http://www.seomoz.org/ugc/the-beginners-guide-to-keyword-research-using-free-tools