Wolfram Alpha

Wolfram Alpha is a website. It is a self proclaimed "computational knowledge engine". It works like google where you type stuff in and hit enter, but it is a repository for knowledge, not links. To explain let me share a few of my favorite uses for it.

1. Want to know how many days old you are or between any two dates? Enter in "how many days between 3-Jan-2002 and today" and it effortlessly lets you know that it is 5392 days.
2. Wanting to cheat in scrabble? Enter "st__k" (with underscores) and it will give a list of all the words with those letters in those places: stack, stalk, stank, stark...
3. Trying to cheat on your algebra homework? Enter in "solve x2 + 5x - 6 = 0" and it will factor it and give you the answers of x = -6, 1. It will even graph it for you.
4. Curious how your third cousin twice removed is feeling up in Barrow AK? Type in "what is the weather in barrow ak" and it gives you the current temperature, the temperature graph for the past week and even the last hundred years. I suspect your cousin is cold. I'll leave it at that.

It's really the coolest thing ever. It came out a year or two after I graduated college so I was never able to use it, but man, it would have been nice.