Wolfram computational knowledge engine

[DannyG]

This was released a few years ago, I just happened find out about it fairly recently. Really a great tool. If you haven't already heard of it take a look at the demo video. Very useful on many levels

Demo
http://www.wolframalpha.com/screencast/introducingwolframalpha.html

Sign up for free account
http://www.wolframalpha.com/

Pro versions
http://www.wolfram.com/

Founder
http://www.stephenwolfram.com/

Discussion 2009
http://forums.planetside.co.uk/index.php?topic=6469.0

[TheBadger]

Is the software searching the net or a privet server to get the data? Very interesting.

[DannyG]

http://www.wolframalpha.com/faqs5.html