What You Get: 2GB free; $99 per year for 100GB.
Compatible with: Android, BlackBerry, iOS, Kindle Fire
How It Works: “Drop” files into dedicated folders, and they’ll instantly be updated on Dropbox’s servers. Share each folder via a secure link.
Why We Like It: It’s beyond intuitive—who doesn’t know how to click and drag?
T+L Tip: Earn free space by referring friends to the service.
What You Get: 7GB free; annual packages from $10.
Compatible with: Android, iOS, iPad, Windows Phone
How It Works: Upload your mobile files, including images, which you can easily turn into galleries, then access them from any other device via the app or website.
Why We Like It: A sleek interface, generous free storage, and easy integration with Facebook and Twitter.
T+L Tip: Images taken on Windows Phones get auto-stored in SkyDrive as soon as they’re taken.
What You Get: 15GB free; $4.99 per month for 100GB.
Compatible with: Android, iOS, iPad
How It Works: The real estate titan of the cloud, Google Drive offers up to 16 terabytes of storage space—equivalent to about 8,000 hours of high-definition video footage.
Why We Like It: You can benefit from the company’s endless products, from editing tool Picasa to sharing platform Google+.
T+L Tip: Use Google+ as a companion to Drive for easy sharing and editing.
What You Get: $60 per year for unlimited photo and video uploads.
Compatible with: Android, iOS
How It Works: No music or text files allowed here: SmugMug only stores images and videos. Uploading is fast and easy—and the program knows to skip duplicates.
Why We Like It: Photo-driven features let you edit, add filters, organize files into albums, and share content.
T+L Tip: Order prints straight from the service’s site.
One to Watch: Flickr
Though it had long been declining in popularity, Flickr has recently given its site a game-changing makeover, with eye-catching galleries that can hold one terabyte of content—at no cost. Suddenly, Flickr is once again the service to beat.