MINIX
Updated: 10/11/2017 by Computer Hope
MINIX is a free Unix clone operating system written from scratch in 1987 by Andrew Tanenbaum. It does not contain any AT&T code and for this reason the source code is also available. Due to its small size, microkernal-based design and simple documentation, it is well suited to people who want to run a Unix-like system on their computer.