|Click for larger view|
Go to the StatPlanet World Bank page to find the URL for the web-based version (the above screen is from that version). Once there you can also download a desktop version of it as well as documentation. At the end of this post is a video demonstrating its capabilities with an introduction on how to use it.
It was written by Frank van Cappelle, of the University of Melbourne, and won the World Bank's Apps for Development challenge. You can see the other finalists in the competition, many of which look equally interesting, at Apps for Development Application Gallery.
Be warned -- if you like pushing data around following any of the links in this post will end up consuming a lot of your time.