An apt-get style tool for popular Windows programs - Firefox, Adobe Flash, Chrome, etc.
https://chocolatey.org/packages
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A very interesting paper on how to use Perl to manage a big win network (roll out updates, check config, etc) without software requiring licenses. =)
Perl to Manage Win Network
See: A Networked Machine Management System - Dave Roth. - http://www.roth.net/conference/lisant/1999/