Chocolatey - The sane way to manage software on Windows.
inFlow Inventory - inFlow Inventory is inventory management software for small businesses.
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
Snipe-IT - Managing assets with a Google doc or a shared Excel spreadsheet is more common than you think.
Just Install - just-install - The stupid package installer for Windows.
Skyware Inventory - Web-based Inventory Management.