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Archive.is allows you to create a copy of a webpage that will always be up even if the original link is down.

Easily find more sites like those you like. Similar Sites helps you find related sites and alternatives based on community recommendations and computer analysis.

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Quantcast is a new breed of measurement service helping buyers and sellers quantify the characteristics of digital audiences against which they can activate addressable advertising solutions.

We have a database containing data for hundreds of thousands of UK websites. Utilizing our specialized algorithms we make it easy for you to analyse & compare results for any website in the UK domain name space.

From AboutUs: See what information we have on Wiki and share your knowledge.

Alexa provides information about websites including Top Sites, Internet Traffic Stats and Metrics, Related Links, Online Reviews Contact Information and Search Analytics for SEM and SEO optimization. The Alexa Toolbar is a browser add-on that shows d...

VirusTotal is a free virus, malware and URL online scanning service. File checking is done with more than 40 antivirus solutions. Files and URLs can be sent via web interface upload, email, API or making use of VirusTotal

Check if your site is down or up. Look at the history of your site and much more!

FREE SEO & PPC Keyword Research software tool, that unveil your competitors’ most profitable Ad copies & keywords. Learn from time-tested Ad campaigns.

Complex Magazine: The original buyer

Website down status test if a particular website is not opening. If your