ArsClip is a freeware clipboard utility that monitors and keeps track of entries on the windows clipboard.
Pasting is done by using a triggered popup window. This window can be triggered by a hotkey, holding right-click, a special trigger window, and other methods.
ArsClip is designed to be portable. If you choose to install to the system's Program Files location, Vista and above will virtualize the data files to your profile - making copying difficult.
ArsClip is highly configurable and has jumplist support as well as many features, including multiple permanent clip groups & pictures, rich text, file copy, and HTML support. Additionally, keypress emulation is also available.