Amazon.com has added a file-syncing feature to its online storage product, Cloud Drive, putting the service on par with competitors such as Dropbox and Google's Drive. The syncing feature will allow users to view an up-to-date file across several devices. Cloud Drive is a desktop application for Windows and Mac, and Amazon.com also has a version designed for Android, just for photos. Amazon.com also offers a Web-based upload panel if users don't want to download the desktop application.