Timetric: making sense of statistics
http://timetric.com/

Timetric's here to help you make sense of data. It focuses on time series analysis: graphing, tracking and comparing the movements of data over time. It creates tools to make it easy to build models on top of time series — updated whenever the data they're based on is updated — as it is to use a spreadsheet. You can use data in the program or upload your own.