The Dropbox software is very light, so you don't need a beefy computer in order to use it. The system requirements are as follows:

• RAM: At least 512MB
• Hard Drive Space: At least equal to your Dropbox storage limit
• Operating System: Windows 2003, Windows XP, Windows Vista, Windows 7, Mac OS X 10.4+, Ubuntu 7.10+, Fedora Core 9+

The Dropbox iPhone app has the following requirements:

• iPhone OS v3.1 or later
• Apple ID with access to the App Store

The Dropbox Android app has the following requirements:

• Android OS 1.5 or later
• 2MB of free space
• SD card of any size

Dropbox's website is also an important part of the service. To use it you'll need to have Internet Explorer 7+, Safari 3+, Firefox 3+ or Opera 9+.