Dropbox

You walk into a meeting and realize you forgot to email your client the presentation. You head to the mall without the kids’ camp shopping list. You’re racing to class and realize you forgot your homework. If your much-needed document is in Dropbox and you have the Dropbox app on your phone, you can stop sweating through your shirt and relax. One of the most revolutionary and useful tools for the iPhone, this PC/Mac-syncing cloud-storage software is a must-have for all iPhone owners. The first free service of its kind, there’s a reason Dropbox is still going strong.

To explain briefly, Dropbox is an online hard drive where you can store and share files (including photos and videos) and sync them between your PC, Mac, iPhone and more. All you do is sign up for a free 2GB storage account on the Dropbox website, install the Dropbox app on your mobile device and the program on your desktop PC or Mac (all for free), and you're all set. In addition to saving you from the above-mentioned emergency situations, Dropbox also provides an easy way to send your vacation photos back home to your computer or upload a video from your PC to your iPhone. It’s one of our favorite apps.

Reviewed: May 23, 2011 | Chantelle Joy Duxbury

This app is included in a scenario called Must-Have Android Apps of 2011