xfce4-clipman 2:1.6.3-1 (amd64 binary) in ubuntu mantic

 Clipman enables you to store and recall X selections, as well as GTK+
 clipboard content. You can also define actions to be triggered by selecting
 some text pattern.
 .
 This package uses Xfce libraries but can be used without the Xfce panel
 and only requires a system tray (notification area).