The Web Font Combinator
This is the source code for http://font-combinator.com.
It is a fairly straigtfoward set of files.
- index.php - which holds the actual content of the tool. What server-side logic is used is also here.
- /less/ - the CSS was written in LESS, and compiled to the /css/ directory. I may consider converting to SASS in the future, as it is what I have used more recently
- third party scripts - like colorpicker.js and html5slider.js.