Pat Kujawa's http://www.clipmenu.com/ scripts, actions, config, etc. Note: the download links on the main site have been broken, so there's a mirrored dmg in this repo. It might also be possible to pull builds from naotaka/ClipMenu: A clipboard manager for Mac OS X.
Put this in the Resources directory, e.g. /Applications/ClipMenu.app/Contents/Resources.