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Keyword First
Provide search engine optimization services and pay-per-click campaign management.
www.keywordfirst.com/

Keyword Marketing
UK-based firm offers a variety of search engine optimisation, reporting, consulting and submission services
www.keywordmarketing.com/

Keyword Performance Company
Internet marketing company providing search engine optimization services, keyword positioning, link popularity and content management.
www.keywordperformance.com/

HomePopular Keyword Search
Tracks the most popular keywords to find sites about home and garden, and real estate sites among the major search engines. Shows the top 50 searches relative to a specific keyword.
homepopular.com/

2KRT: Keyword Ranking Tool
A free Microsoft Excel VBA application that can be used to check Google for keyword ranking and to track search engine rankings for various keywords over time. Uses Google API and API Web Service.
www.2kmediat.com/

Search Engine World Keyword Analyzer
Helps analyze what search engines see for your webpage's keyword density. Has word filters and can ignore certain word lengths.
www.searchengineworld.com/

Stickysauce's Search engine Keyword Generator tool
Cut and paste the textual contents of your site to generate 15 one word keywords, four 2 words keywords and one 3 word keyword string based on the frequency of which they appear on your page. Allows you to see what keywords are most common in your site text and to see if these match the kinds of keywords you want to be targetted within the search engines.
www.stickysauce.com/

Keyword Search
Find in CERNLIB documentation and in CERN computing documents.
consult.cern.ch/

The Human Nature Review Internet Explorer Search Toolbar
This free toolbar searches resources such as PubMed, Scirus, Encarta, Encyclopedia Britannica from IE v.5.1 or higher.
human-nature.com/

Internet Search Office
Site offers program that is a search robot, designed for fast-track navigation through the hyperlinks,newsgroup, and extracting emails.
www.esalesbiz.com/