Wolfram Alpha

Wolfram Alpha is a search engine that works on a few different levels than the standard Google or Yahoo webcrawler. Wolfram Alpha will let a user upload a picture, input data tables, and other files to search throught something other than just keywords.

Another great thing about WA, is that it displays a variety of information based on the searched keywords, formulas, etc. For example if you search "1 Lemon," nutritional information, and tables with detailed information about what's inside a lemon will be displayed. There is also an option to specify whether to include or exclude the peel into the calculations.

Here is a nice blog post about one persons five favorite features of Wolfram Alpha.

www.wolframalpha.com