City Population

High-tech city population database. Gives official (census and estimate)
population figures for thousands of cities, agglomerations, provinces and states
around the world (although large parts of Africa and Central en Southeast Asia
are not yet covered). Apart form listings (alphabetical and by size), there are
interactive Java-based maps showing popluation sizes on mouseover action.
Maps also pop up when clicking on the number of a city in the lists. There is a
special listing of cities with over 1 million population (also avaibale for
downloading in Excel format). There is explanation available on how
to use some of the more advanced map operations.
By Thomas Brinkhoff

http://www.citypopulation.de/

Tabla interactiva online

Dabbleboard

Dabbleboard - tabla interactiva online

is an online collaboration application that’s centered around the whiteboard. With a new type of drawing interface that's actually easy and fun to use, Dabbleboard gets out of your way and just lets you draw. Finally the whiteboard enters the digital age!