Plum Amazing has updated CopyPaste Pro (http://plumamazing.com/mac/copypaste/), a multiple clipboard utility for Mac OS X, to version 3.0. 

Macs come with only one clipboard; every time you make a new copy all previous clip info is lost. CopyPaste Pro changes that because it works in the background and remembers all copies and cuts creating a “Clip History.” The “Clip Archive” is the place in CopyPaste Pro where permanent clips are kept. 

CopyPaste Pro 3 adds a search-through clips feature for the History and Archives, so you can find anything in any clip. Also new is a Clip Revolver feature. Actually, this feature existed in a much older version of CopyPaste. Users requested it so Plum Amazing has brought it back.

This is how it works: turn Clip Revolver on in the preferences and then command-option-v pastes and empties the last clipboard. This can be set in the preferences. A copy of the last used clip either copied or pasted can be at the top of the History stack, so you can paste it again and again. This can be set in the preferences.

CopyPaste 3 is a free update for registered users and costs US$30 for new users. It requires Mac OS X 10.5 or higher.