RackTables - Racktables is a nifty and robust solution for datacenter and server room asset management.

FAI - FAI is a non-interactive system to install, customize and manage Linux systems

DCImanager - DCImanager is a platform for managing physical equipment. Connect any physical equipment to a single platform. Use the platform to manage your servers, switches, PDU as well as physical and virtual networks.

opsi.org - opsi is an Client Management System for Windows and Linux clients based on Linux servers.

NetBox - NetBox is an open source web application designed to help manage and document computer networks. NetBox was developed specifically to address the needs of network and infrastructure engineers.

Microsoft Intune - Microsoft Intune is a cloud-based mobile device and application management solution.