SlackBuildsOrg/desktop/rofi

A popup window switcher roughly based on superswitcher, requiring
only xlib and xft. This version started off as a clone of
simpleswitcher, the version from Sean Pringle. All credit for this
great tool should go to him. Rofi developed extra features, like
a run-dialog, ssh-launcher and can act as a drop-in dmenu
replacement, making it a very versatile tool.