Here are some fabulous applications at http://yeroon.net – if you are in the field of data and / or analytics you should try and dekko this site- it is created by UCLA’s department of statistics.
You can create stockplots ( something similar to based to Yahoo and Google finance which I have covered earlier)
or create ggplot visualizations
or create a linear model
Just using a browser to upload the dataset and thats all the hard/soft ware you need .
Note the background uses R. It would be interesting if companies like Revolution R, SAS and SPSS can do in this browser based computing ( maybe charge like Amazon Ec2 apis)
Kudos and credits to http://www.stat.ucla.edu/~jeroen/
DECISION STATS 