Shopzilla!

InvisibleHand discreetly notifies you if the product or flight you’re shopping for is available more cheaply from another retailer or travel site. The notification provides a convenient link straight to the relevant page on the competing website.

PriceReel - Online Shopping Price Comparison Search Engine

Get the lowest prices on computers, electronics, furniture, cameras, clothes and more. Online shopping, compare prices and find the best deal with PriceGrabber.com

Bustaprice is a search engine for comparing prices of products listed across the web. It always shows you the lowest price regardless of what you're searching for.

Shopping.com, part of the eBay Commerce Network, pioneered online comparison shopping over a decade ago and today remains one of the leading shopping destinations for a comprehensive set of products from thousands of premier brands and trusted online stores. With a commitment to delivering consumers a superior shopping experience, Shopping.com offers users easy-to-use search tools, engaging content and time saving navigation, along with millions of user-generated product and merchant reviews from Shopping.com’s user community. »

Shoptimate.com lets you compares prices of multiple items at once and shows you which item to buy where to save the most. Including shipping costs.

The world's first price per unit comparison engine for household and personal essentials.

Pricerazzi.com keeps track for money back, making certain every customer gets the very best price by knowing if prices fall or items go on sale on purchases they have made.

RedFlagDeals.com is a leading provider of online promotions and shopping tools to Canadians that attracts more than 2.5 million monthly readers. The site provides thousands of deals and coupons across 14 categories. The company has full-time staff dedicated to finding deals, coupons and freebies to serve over 450,000 Canadians that have joined the RedFlagDeals.com community.

Products search / comparisson website with millions of products from the world's most popular online shopping websites. See trending products, receive discounts and coupons.

hopshop.us evolved from a simple concept - to allow serendipitous discovery of great stores and great products online. Often people discover new stores and products while simply walking around the mall. Unfortunately, this isn't the case when shopping online. Search engines display results from a small number of stores, and that limits the shopper's number of options.

Google Product Search applies Google's search technology to help you find and compare products from online stores across the web and then points you directly to where you can buy them.

When viewing a product on Amazon, Price Snoop will show you just how much it costs on the other Amazon stores and allow you to navigate between them with a single click.

The PriceBlink browser add-on automatically finds lower prices and money-saving coupons when you're shopping. Stays hidden otherwise.