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Microsoft Research have released an Internet Explorer Add-On that lets you play “Spot the difference” with websites.

Diff-IE is a prototype Internet Explorer Add-on that:

  • Highlights the changes to a page since the last time you visited it
  • Allows you to view – and compare – previously cached versions of a page

When changes are made obvious, especially the subtle and unexpected ones, you get a whole lot more out of the web pages you visit.

“Where would this come in handy?” you may ask. 

Well consider you’re an internet shopper.  You see one price one day, go back another and unknown to you the price may have changed.  With Diff-IE, you’ll know its changed, instantly.

Or forums.  Keeping on top of, or moderating forums with tonnes of posts can be very difficult, with Diff-IE, you see straightaway what has changed on the boards.


Diff-IE requires Windows XP, Vista or 7 and IE 7,8 or 9 Beta

If you want to see what I’m talking about, see some examples of Diff-IE here.


Works on Windows x86 & x64, however only x86 IE is supported.

Please note that this is prototype software.  Any feedback; should you wish to send any, should be directed


Download Diff-IE

Download Diff-IE

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