Mezzano – An operating system written in Common Lisp
One of my favorite things to learn when I come across any experimental OS is: "why?" Redox wants to do microkernel architecture The Right Way, and wants to use a guaranteed memory-and-type safe language (Rust). ReactOS wants to create a drop-in replacement for Windows that not only supports older Windows programs, but also Windows-compatible device drivers. MenuetOS wants to build something approximating the OS experience most users are used to, but on bare metal in assembly.So: why Mezzano?