What are the requirements for on-premise Kanban solution?

Kanban Tool On-Site is distributed as a complete virtual machine image in OVA format and as a stand-alone .deb package for 64-bit Ubuntu 20.04 LTS.
The only requirement is a modern computer with at least 4 GB of RAM and about 10 GB free disk space, which can run Virtual Box or any other virtualization solution, e.g. VMware Workstation Pro.

Kanban Tool is a visual management solution that helps companies visualize workflow, track project progress, and analyze and significantly improve business processes. Kanban Tool provides powerful online Kanban boards with seamless time tracking and insightful analytics. Our Kanban software works perfectly in any business process and is designed for teams that want to visualize work on a Kanban board.