JetKVM is much like nanoKVM but a slightly polised version.
What is JetKVM?
JetKVM is a high-performance, open-source KVM over IP (Keyboard, Video, Mouse) solution designed for efficient remote management of computers, servers, and workstations. Whether you’re dealing with boot failures, installing a new operating system, adjusting BIOS settings, or simply taking control of a machine from afar, JetKVM provides the tools to get it done effectively.
As far as I know, these Jets are not available for retail yet, but can be bought via their kickstarter.
Link to the source code: https://github.com/jetkvm/kvm
Link to their website: https://jetkvm.com/
Link to their kickstarter: https://www.kickstarter.com/projects/jetkvm/
Picture of a JetKVM mounted in a homelab, credits to Jeff Gerling.
ELI5
Remote KVM lets you access the machine as if you’re in front of it, including pre-boot / BIOS / BSoD’s / Etc (when software isn’t / can’t run) because the device (usually) connects to the computer’s USB/VGA port.