Firefox add-on that periodically extracts numerical values
Version: 1.3Catch the time dimension! Chartlet is a Firefox extension that periodically checks places on the Web, extract and stores numerical values. On demand, you can display the history of those values in nice charts.
Operating System: Mac OS X
Not only you can capture a value directly displayed on a page, like a temperature or a stock quote, but you can also extract the rank of an item in a list, or the number of occurrences of an expression in one or several pages.
Of course, you have a total control of what is retrieved by your browser and how often extractions happen. Each extraction configuration is controlled by a chartlet. You can install and run as many chartlets as you want.