While developing a new content management system, I was looking for a good file manager to use in conjunction with TinyMCE. After some searching, I came across PHPfileNavigator. I really like the simplicity and power of the application.
I am once again working on a new Web-based project, and went to the PHPfileNavigator Web site to download the app again and to check the news. While doing so, I noticed that PHPfileNavigator is now available as a Facebook app. You can add PHPfileNavigator to your Facebook profile and then use the app to upload and organize files.