PieTabSwitcher-KWin

Windows switch in the form of circle sectors for KWin (KDE Plasma6)

For dev

Sources and run:

cd ~/.local/share/kwin/tabbox/pie/
plasmashell --replace

or kwin_x11 --replace or kwin_wayland --replace but they will kill all apps in user session. plasmashell just reloads plasma, not full DE session.