GLPI - GLPI is the Information Resource-Manager with an additional Administration- Interface.
Chocolatey - The sane way to manage software on Windows.
Lansweeper - Lansweeper discovers Windows, Linux and Mac machines in your network.
WAPT Community - Deploy your software and configurations, perform an inventory of your machines in real time, control Windows Updates and benefit from customized reporting of your IT assets
FusionInventory - Fork of the OCS Inventory project that enables users to inventory their IT assets.
Just Install - just-install - The stupid package installer for Windows.