Download of QuickPopUp X 4.5 for Mac was available from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The actual developer of this software for Mac is Kanex Group, Inc. We recommend checking the downloaded files with any free antivirus. The program belongs to Internet & Network Tools.
From the developer:
QuickPopUp X (previously MacPopUp) is a program that allows Mac users to exchange instant messages with other users on any local area network (LAN).
You may want to check out more software for Mac, such as QuickPopup, which might be related to QuickPopUp X.
Instant messaging