Shelf saves everything you copy on a Mac and brings it back with one shortcut, ⌃⇧V. Each item shows the app it came from and a real preview, and you can search it by typing, even for text inside images.
Pinboards hold the snippets and links you paste every week. Paste Stack lets you copy a few things and paste them back in order, one ⌘V at a time.
It’s free and works without an account. Your history stays on your Mac, and password manager copies are skipped automatically.