Digital Rebar's Provision tool is an "APLv2 simple Golang executable that provides a simple yet complete API-driven DHCP/PXE/TFTP provisioning system. It is designed to stand alone or operate as part of the Digital Rebar management system.". It "acts as a Cobbler Replacement - with additional per-Machine workflow provisioning capabilities."
Shane Gibson from RackN will be giving a overview and demo of this tool.