Box.net for iPhone [AppStore, Free]

This tool lets you access your Box.net account directly from your iPhone.

Some features:

• Scroll through and view all the files and folders stored on Box.net account.
• Share individual files or entire folders of files stored on their Box.net accounts with any of their iPhone contacts
• Snap pictures, upload them to Box and share them
• Monitor updates to your Box.net account, such as files or folders added by you and people that are collaborating and contributing to your Box.net account
• Open work files such as Word, Excel, Powerpoint and PDF documents.

Box.net lite version is free: 1GB of online storage and 10GB of bandwidth a month. AppStore link.