SmolBSD is a tiny BSD UNIX (NetBSD) system creation tool, primarily aimed at building modern, lightweight, fast micro VMs. SmolBSD can start a service in (way) under a second, giving it the ability to be used as a virtualized container, thus reducing attack surface and actually isolating workflows.
↫ SmolBSD website
Neat.
It was started as an effort to make NetBSD kernel boot in PHV paravirtualisation mode, and with some work, it is already usable.
The kernel is 9Mo only.
Good job !