Instead of relying on custom, OS specific, proprietary plug-ins, they can now easily build and maintain their apps using a few simple JavaScript APIs and have the browser do the heavy lifting.
A Chrome.. widget? Addon? thingy?
A Chrome thingy that lets you quickly create and apply custom CSS to websites. You can also use http://stylebot.me to share your custom redesigns with the world (or in this case, other people who know about stylebot).
jQuery File Tree is a configurable, AJAX file browser plugin for jQuery. You can create a customized, fully-interactive file tree with as little as one line of JavaScript code. Currently, server-side connector scripts are available for PHP, ASP, ASP.NET, JSP, and Lasso.