Ever thought “Acrobat reader 9 is slow, I would rather install Acrobat 3” ? 🙂 You will understand the importance of old software versions, if your system is old and you did not upgrade the system, you installed latest version of a resource consuming software !
This website gives older versions of all useful softwares . Lets say, WinZip. You select the software from the list of available softwares, and the website gives a list of versions of the software you searched for.
You can download any version you want by clicking the link!