applet-window-buttons : Plasma 5 applet in order to show window buttons in your panels ( https://github.com/psifidotos/applet-window-buttons )
material-decoration : Plasma 5 applet in order to show window buttons in your panels ( https://github.com/Zren/material-decoration )
sierrabreeze : OSX-like window decoration for KDE Plasma written in C++ ( https://github.com/ishovkun/SierraBreeze )
virtual-desktop-bar : KDE Plasma panel applet for managing virtual desktops ( https://github.com/wsdfhjxc/virtual-desktop-bar )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a earshark
For Paludis use this rsync : rsync://gentoo.zugaina.org/earshark-portage
If you have a problem : ycarus(-at-)zugaina.org