Tiny PXE Server - Small portable standalone PXE server (dhcp+tftp+http)
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.
Serva 32/64 - Serva is an Automated PXE Server Solution Accelerator based on an all-in-one portable multi-server engine
Snipe-IT - Managing assets with a Google doc or a shared Excel spreadsheet is more common than you think.
ERPXE - ERPXE project simplifies the process of installing and customizing a Multi-Boot PXE server.
Zabbix - Track, record, alert and visualize performance and availability of IT resources