These sites (and apps) specialize in saving. By Magazine Editors July 31, 2010 You can see a daily offer from local businesses—such as a restaurant, spa or museum—at Groupon.com. Here’s the “group” part: If enough people buy the coupon, all of you get the deal. (If not, no one gets the deal.)DealNews.com searches more than 2,000 online retailers and offers more than 100 deals every day on everything from patio furniture to flip-flops—as well as computers, phones and other tech gadgets. Sign up to receive e-mail alerts on discounts for any category. For baby or mom, membership in Zulily.com (sign up free) entitles you to as much as 70% off brand-name clothes, toys and nursery furniture. At the store, try an app that uses your phone’s camera to recognize a bar code and does a quick product search to help you compare prices at other stores. Got an iPhone? Download the RedLaser app for 99 cents. Got an Android? Download the Google Shopper app free.