Wolframalpha.com – wolframalpha is an ambitious project to make all systematic knowledge immediately computable by anyone. What does this mean? It is not a search engine, but a computational knowledge engine. Enter any town, date, stocks, calculation, formula, or general idea and see all the computable knowledge associated with it. Comparisons can also be made! Enter two stocks e.g. “IBM apple,” for a detailed comparison of stock performance including P/E ratios and realized returns vs volatility.