Clipomatic

From 43FoldersWiki

"Clipomatic is a clipboard cache program - it remembers what was copied to the clipboard even after new data is copied, and allows you to retrieve the old data. While there are many programs that do the same, none are quite so convenient, simple to use, or efficient as Clipomatic."

It's free and brilliant. Yet another of Mike Lin's marvellous applications for Windows. I can't work without it!