Wolfram Alpha is an internet based Knowledge Engine. It does more than a search engine because it can do complex math and science equation, generate bar codes, graph equations, display nutritional information and much more. You can try Wolfram Alpha free by clicking here. Wolfram Alpha gives you direct answers instead of links like Bing and Google. Wolfram Alpha can even answer trivia questions like the distance to mars or the width of a football field. The results of the search are displayed in a clear and organized manner that is easy to read.
Wolfram Alpha also has dozens mobile apps for iOS and Android. To learn more about the apps click here. The Wolfram Alpha app is a mobile portal into the Wolfram Alpha knowledge base. Other apps made by Wolfram Alpha include course assistance apps to help you pass your classes and specialized reference apps.
Siri, the iPhone 4S assistant feature also uses Wolfram Alpha to answer your question. To learn more about Siri click here.
Click read more below watch a video about Wolfram Alpha.