Instant Source lets you take a look at a web page's source code, to see how things are done. Also, you can edit HTML directly inside Internet Explorer. While this has always been possible using the IE View Source command, Instant Source changes the concept entirely, and allows you to view the code for the selected elements instantly, without having to open the entire source. The program integrates into Internet Explorer and opens a new toolbar window which instantly displays the source code for whatever part of the page you select in the browser window.