PasteHub.net Cloud-based cross-platform clipboard (copy and paste)
service.  PasteHub.el is an emacs client for PasteHub.net.

PasteHub.el can synchronize kill-ring with PasteHub.net cloud
service automatically.  You don't have to learn new key-bindings.

To get you started, you need to install PasteHub client for your client OS.
 https://github.com/kiyoka/pastehub

and then, add this line to your .emacs file:
 (require 'pastehub)