FAI - FAI is a non-interactive system to install, customize and manage Linux systems
GLPI - GLPI is the Information Resource-Manager with an additional Administration- Interface.
opsi.org - opsi is an Client Management System for Windows and Linux clients based on Linux servers.
Lansweeper - Lansweeper discovers Windows, Linux and Mac machines in your network.
Microsoft Intune - Microsoft Intune is a cloud-based mobile device and application management solution.
FusionInventory - Fork of the OCS Inventory project that enables users to inventory their IT assets.