This document lists and briefly describes various tools for researching competitors' websites, including Alexa, Compete, Quantcast, Google Trends for Websites, Google Search Insights, Archive.org, DomainTools, SEMRush, SearchStatus, Xinu, SpyFu, KeywordSpy, WordPot, Google Adwords Keyword Tool, and SEO training courses. These tools provide data on traffic trends, demographics, backlinks, keyword trends, and how websites have changed over time to analyze competitors' search engine optimization strategies and performance.

1. Researching the Competition
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2. • General Competitive Research Tools
• Alexa - shows traffic trends for competing
websites. Alexa has a heavy webmaster bias
that is nowhere near as noticeable at
Compete or Quantcast.
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3. • Compete.com - shows you traffic trends for
competing websites. Allows you to compare
sites head to head. Also offers a paid search
analytics tool which is both exceptionally
useful and affordably priced.
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4. • Quantcast - shows site traffic and
demographic trends and details. Also allows
you to download a list of their top 1,000,000
websites.
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5. • Google Trends for Websites - free tool from
Google showing traffic estimates, visitor
country location, top 10 related websites, and
top 10 related keywords. Only returns data for
fairly high traffic websites though.
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6. • Google Search Insights - shows keyword
trends, hot keywords by category, and top
geographic regions for a keyword.
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7. • Archive.org - see how old a website is and
what it looked like in the past
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8. • DomainTools - see Whois data and how many
times a domain has changed hands
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9. • http://marketing.grader.com
• SEMRush.com
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10. • SearchStatus - highlights nofollow links, shows
PageRank, shows Alexa rank, and provides
links to some backlink information
• Xinu - lists some SEO related data plus more
general web related data points like Alexa
ranking and Del.icio.us bookmarks.
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11. • SpyFu.com
• KeywordSpy.com
• WordPot.com
• Adwords.google.com/o/KeywordTool
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12. SEO Training Course
• http://www.seobook.com/free-account/
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