Rove Mobile : Blackberry File Manager

Rove Mobile File Manager enables you to manage files in your blackberry's memory and micro SDcard. It also lets you access FTP files ( works great for editing sites ) and windows file sharing ( just figured it out ).

ROVE also place extra features like a built in notepad which will enable you to edit txt and html files.

They also gave it the ability to upload and download files, just like a full featured ftp software. I love the built it in notepad which I think makes this a must have software in your Blackberry and I still can't believe its free.
You can download Rove Mobile File Manager for free in here.