This OPSI SERVER Command line Tool (Opsi Updater) will check for available OPSI Product Updates on official Servers (example Mozilla) and will allow to Download and Update older Product Versions on OPSI Repository and distribute them on clients having older versions.
readme:
http://svn.code.sourceforge.net/p/opsiupdater/code-0/trunk/readme.txt
Appupdater provides advanced functionality to Windows, similar to apt-get or yum on Linux. It automates the process of installing and maintaining up to date versions of programs. It is fully customizable for use in a corporate environment.