Need to plot some data quickly? Try

Your data is plotted in real time as you type, or you can copy/paste in your data in csv format.

This is for the times when you don't want to wait for Matlab to open, and it's not worth it to write a python matplotlib script/use a command line tool.

What features do you want - uploading text files? scatter plots? zooming? comparing multiple trends? plotting an arbitrary function? anything else? I'm all ears.

Just one of those projects. It makes use of Stanford's protovis library.