This list of five Black Friday apps comes from iYogi, which provides computer support for consumers and small businesses. A common feature is the ability to share deals on Facebook and other sites.

Go straight to all the Black Friday 2011 deals and ads.

TGI Black Friday – Search thousands of deals from stores like Best Buy, Kohls, Macys, Target, Walmart, and more. Get updates from almost all the major retail stores, download PDF ad scans, create personalized shopping lists, e-mail deals to friends, and compare prices of products across various stores and categories.

The Coupons App – The Coupons App Android application is a must-have if you want to grab a good deal this Black Friday. This app provides the latest shopping deals and online coupons for countless retail stores, beauty products, restaurants, and gas stations–all at your fingertips. For a specific deal, the “˜Voice Search’ function will let you find the coupon of your interest available at a best price. With barcode scanner to compare prices.

The Black Friday Deal Finder – This iPhone app places all pre-released advertisements from various retailers at your fingertips. It also categorizes products by brand, price, free shipping, online availability of products, and best discounts. The Black Friday Deal Finder updates and notifies you of any new deal or advertisement release. One can create customized shopping lists and ensign his/her favorite deal for quick and easy access.

Groupon App –  Groupon presents another free shopping application for iPhone, Android and Blackberry users. This app categorizes deals of up to 50%-90% discounts on various products and is available in more than 500 cities across the world.

Google Shopper – This app helps customers find unbelievable deals on millions of products online. It provides shoppers the opportunity to pinpoint the best deal with various interactive features. Google Shopper app hosts features like: “Today’s offer”, “Scan the cover of book and media”, “Search by voice” etc.