The icon from the Dropbox (https://www.dropbox.com/).
Usage of the Dropbox Icon
The Dropbox Company has been around since 2007 and has since become a very popular online tool for storing information on the cloud. You can use this icon when you want to let users of your website know where they can find certain files online. It can be made into an image link that goes straight to where you have stored your Dropbox files.
There are a variety of icons to choose from.
The company was launched in 2007.
Dropbox is primarily a file hosting website and would be a great icon to use when comparing file hosting services.
It would also be a great icon to use when discussing the cloud in general.
Related icons that may be of use include the Upload, Send file, and Download from cloud icons.