Unclutter VS Clipman

That sounds exactly like Unclutter. https://unclutterapp.com/. Source: about 1 year ago

Unclutter. Unclutter is a simple piece of software that suits its name. This Mac app is accessible with a quick swipe from the top of your screen and functions as a convenient place for storing quick notes, recent files, and clipboard information. Source: about 1 year ago

Unclutter for short notes, activated by moving the cursor to the top of the screen. Source: over 1 year ago

Let me suggest Unclutter for Productivity section. Source: over 1 year ago

Unclutter? The Clipboard panel is pretty basic, but works with hex colors. Source: almost 2 years ago

I’m actually using xfce4-clipman myself tho (yeah I got that name wrong too, sorry bout that). You can find that from the XFCE project. You should be able to use it as a standalone, without needing to run the XFCE desktop environment, at least it’s packaged that way on Archlinux, which I use. Here’s a webpage for it: Https://docs.xfce.org/panel-plugins/xfce4-clipman-plugin/start. Source: over 2 years ago

Sure you didn't enable "Sync selections" in the clipman settings? Selecting text under x11 always copies it...you can't disable that. But by enabling "Sync selections" you say that the mouse selection buffer and the buffer are the same..thus overwriting every copy as soon as you select something. Source: over 2 years ago