+1
Paste buffer
This idea is implemented in the jetBrains products, and it turns out to be super helpful. Basically, you can copy up to five things and then press Ctrl+Shift+V to bring up a small dialog to pick which of the last five things you copied for you to choose which one should be pasted.
Service d'assistance aux clients par UserEcho
On Windows you may try ClipX or Ditto.
Clipboard-manager has the advantage to work system wide, and not only on a specific application.