TRS-XENIX is described as 'The goals are to understand and learn how the operating system works at a detailed level and to attempt to adapt it to modern hardware and software systems, such as solid state based hard drive emulators and Ethernet connected devices' and is a Operating System in the OS & Utilities category. There are more than 100 alternatives to TRS-XENIX for a variety of platforms, including Linux, Self-Hosted solutions, BSD, Windows and Mac. The best alternative is Ubuntu, which is both free and Open Source. Other great apps like TRS-XENIX are Debian (Free, Open Source), Linux Mint (Free, Open Source), Manjaro Linux (Free, Open Source) and Arch Linux (Free, Open Source).
Chromium OS is an open-source project, used primarily by developers, that aims to build an operating system that provides a fast, simple, and more secure computing experience for people who spend most of their time on the web. Chromium OS and...
MINIX is a POSIX-compliant Unix-like operating system based on a tiny microkernel running in kernel mode with the rest of the operating system running as a number of isolated, protected, processes in user mode.
CloudReady is a operating system built and maintained by Neverware. Based on Google’s open source Chromium OS, CloudReady uses web apps and both cloud storage (Google Drive) as well as local storage (File manager). Comes without Android app support.
antiX is a fast, lightweight and easy-to-install linux live CD distribution based on MEPIS and Debian's testing branch for Intel/AMD x86-compatible systems. antiX offers users the "Magic of MEPIS" in an environment suitable for old computers.