Updated May 31, 2014

Bottom line

Copy, the file-sharing service from the security and storage giant Barracuda Networks, offers substantial free cloud storage (15 GB, plus more for referrals) along with heavy encryption and no file size limits. Despite Barracuda's best marketing efforts and a generous referral program, Copy hasn't generated the same buzz as major competitors but still has very good prices and is worth considering, reviewers say.

Ease of use

Simple as can be. Barracuda's Copy (15 GB free; $10 per month for 250 GB) is a straightforward cloud storage service that lets you store and share files. Signing up for a personal account is easy; just type in an email address and you're automatically signed up with 15 GB of free storage. Copy works with Windows, Mac and Linux. Install the app onto your device and every file you move to your Copy folder will automatically sync with the devices you've registered. It's not the fastest service, though, some users say.ProsGenerous free storage, Strong encryption, No file size limitsConsNo editing features, 250 GB minimum purchase (after 15 GB free)