So, which of the links that say Download is the actual link for downloading the application?
You can get the ZipCentral here. I just downloaded it from PC World.
Usually the correct link is the one where it says Download on a green background, the one on upper-left side. In this case, the download link is dead because the software's official website does not exist anymore. You can try an alternative such as WinZip or WinRar.