It's a Chart Maker, like a recipe card for knits...

I like this simple text based chart creator from Inna Zakharevich. It's text based, so you type in your pattern and it generates a chart for you. I've seen other sites that allow you to drag&drop stitches into a graph area, but once the initial novelty wears off it's just more time consuming. I prefer this one:

http://www.innaz.com/cgi-bin/makechart/makechart.cgi