Facebook is the social network with most users worldwide, and therefore, it's not at all strange that each day there are new projects focused on using this social network, like FlipToast.
Facebook without a browser nor an interface
The main idea behind FlipToast is to totally do without an interface or a web browser to be able to access Facebook. It simply shows a small icon on the desktop, that when clicked shows a taskbar from which it's possible to access the majority of options.
With FlipToast it's possible to upload new photos to a profile (even choosing which album they are stored in), write comments on the wall of any contact, check which users are available to speak via chat and to start conversations with them, keeping updated with all the change notifications, etc.
Therefore, if you want a lightweight application that will allow you to access Facebook without any need of a browser, you only have to download FlipToast.