Avatton Software, Inc. has Air Sharing (iTunes Link) in the iTunes App Store for $2.99 (4.99 – 2 instant savings) for a limited time.

With Air Sharing, you can:

• Mount your iPhone or iPod touch as a Wi-Fi drive on your computer (Mac, Windows, or Linux) or connect from your computer’s web browser
• Drag-drop files between your iPhone or iPod touch and your computers
• View and email documents in many common formats
• Send email attachments