For desktop: virt-manager, server: cockpit with the vm plugin.
From the website: Goals
Take control of your computer Get the most from your hardware Enjoy a reliable experience Improve your experience behind the scenes Develop and contribute quickly and efficiently Be part of a thriving community Have fun while interacting with other users and contributors
These are so incredibly unspecific
Looks treemendous
Nautilus kinda has it, don’t know how it works though
*seconds per pixel