I’m currently using Klipper, and it’s fine, I suppose, but I miss the ability to cycle through the previous clips with simple keypresses, like in the emacs killring (the only thing I miss from my very brief experimentation with emacs back in the day).
For the list of all clipboard items, ready to be chosen: Klipper tray icon, right-click → Configure clipboard → Shortcuts→ “Open Klipper at Mouse Position”. You can choose from the list either with the up/down keys, or with the mouse.
Klipper’s item-cycling doesn’t require more keystrokes than Emac’s. For example, what I achieve in Emacs with
C-y M-y M-y
I achieve with Klipper withH-v H-v C-v
(no need to operate with the mouse).H
is the “hyper” or “super” key – but the keys are fully customizable.