Chrome: If you routinely use popular cloud-based storage solutions like Dropbox, Box.net, Google Docs, and others, Cloud Save allows you to directly download a file from the web to your cloud drive.
Cloud Save is open source and works with Google Docs, Box.net, Dropbox, Amazon Cloud Drive, Windows Live SkyDrive, SugarSync, Facebook, Picasa, Flickr, Min.us, Twitpic, and more. Once installed it adds a new entry to your right-click context menu for “Cloud Save”; click on that entry and pick the cloud service you’d like to use. Select the service you want and the file is transferred in the background between the hosting site and your cloud drive.
Currently there is no option for you to remove the services you don’t use (a minor annoyance at worst, given how well the app works), so hopefully future releases will include the ability to par down the list to just those services you routinely use.
Cloud Save is free and works wherever Chrome does.