Community for the i3 window manager and its popular fork i3-gaps.
My preference is Diodon - especially with the Add images to clipboard history option enabled. And if you enable the Application Indicator plugin, it lhappily stays as an icon in your system tray.
The perfect clipboard for i3.
Thanks, I’ll check it out!
copyq
That's a great app. I didn't know that one. Thanks!
greenclip and rofi
parcellite is a lightweight clipboard manager, I use it in i3. It has some useful features and supports basic key bindings. A more advanced one is xfce4-clipman (works standalone without Xfce, uses Gtk).