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Window Shopper for Firefox... Instantly compare prices on any product on 3,200 U.S. online stores including Amazon.com, eBay, Best Buy, Newegg, Macys, Nordstorm, Overstock.com, Staples, Target, and Wal-mart. Our index covers over 110 million products in practically every product category. If we find a deal, we'll show it. If we can't, we'll show you similar products you may also be interested in.

With the Window Shopper Add-on, there's no more jumping around from site to site to compare prices or to find what you want.

After you download and install Window Shopper, you will see a "See Similar" icon appear next to product more...

What's New

  • Fixed critical bugs.


  • Mac OS X 10.5 or later
  • Firefox 3.5

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Window Shopper for Firefox User Discussion

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Dr.-Girlfriend Member IconComment+517

There are some extremely critical reviews regarding this extension over at Mozilla.org; Firefox users considering installing it should read all of those comments first. Link:


Reply0 replies
Bushwhack Member IconComment+127

Mildly misleading & disappointing system requirements.

It popped up in my RSS feed and when going to the site to download it, it says that my browser is not supported.

It clearly says Firefox 3.5 + (PLUS and/or HIGHER). Apparently that was a lie. Firefox 4 is NOT supported.

Oh well. I suggest revising your requirements to accurately reflect the product.

Reply2 replies

Thanks for the feedback. I will correct the listing immediately. Sorry for any inconvenience.


Thank you. I just didn't want anyone else to get confused either.

I look forward to future Firefox 4 support and am willing to alpha/beta test should you need any help down the road. I've used tools like this in the past and they are really handy.

I'm interested in seeing where this app can go.


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Current Version (1.x)


Downloads 478
Version Downloads 477
License Free
Date 20 Oct 2010
Platform OS X / Intel 32
Price Free
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