Operating Systems

Operating systems run your computer! There are lots of innovative OS projects but only a few are really used. A few more than those have some interesting ideas. Expanded Main Page - OSDev Wiki has tons of resources on building an operating system.

Projects

Desktop

Aside from Linux, Windows, MacOS and derivatives…

IlluminOS
An operating system that claims to provide advanced system debugging, a next-generation file system, networking and visualization.

https://ameliorated.info/
Windows 10 with the crap removed

DawnOS
An operating system built on the subleq higher level language architecture. See the video for a detailed overview!

Redshirt
Redox :: is a Rust operating system with a microkernel-based design.
Urbit :: A 'universal function'.
MetalOS :: A hobby project written by a single person.
InterimOS :: Written to accompany mntmn's custom hardware.
CirnOS :: An operating system that transforms a Raspberry Pi into an Arduino. effectively.
Demikernel :: interesting approach to architecture
CrysaLisp :: A next-generation Lisp machine.
TempleOS (racist)
CollapseOS :: An OS written entirely in the Forth programming language.
Fuschia :: Google's up-and-coming unified desktop and mobile operating system. Presumably similar to Linux-SE (Android). https://blog.quarkslab.com/playing-around-with-the-fuchsia-operating-system.html
Gentoo :: An operating system that prides itself on building everything from source. Leaving Gentoo https://www.paritybit.ca/blog/my-beginnings-with-gentoo https://timboudreau.com/blog/gentoo/read gentoo seems like a great learning exp https://wiki.gentoo.org/wiki/Raspberry_Pi#Hardware help loading gentoo onto a pi {might be more helpful to put on qemu}
Qubes OS :: An operating system that isolates every application and device on the computer, granting permission to each only when necessary. Many journalists and security professionals rely on this.
WhoNix :: An operating system designed to completely sandbox your activity inside of a virtual machine.
Plan9 :: Defer to Devine's notes on the subject.
- Plan9 resources: http://www.9gridchan.org/
- Plan 9 System Calls
- plan9 tools for unix operating systems
Junos OS
Spectrum :: An OS modeled after Qubes, but making full use of the Nix reproducible build system, and dedicated to supporting mainstream x86-64 hardware.
SmartOS :: combines opensolaris tech with linux kvm virtualization. has zfs. contributed to illumos project

Mobile

https://news.ycombinator.com/item?id=23100713

LineageOS
The most popular alternative Android operating system, built off of CyanogenMod. https://wiki.lineageos.org/devices/starlte/install https://www.reddit.com/r/degoogle/comments/gu2kk9/lineageos_vs_e_vs_alternatives/

e
An operating system designed to function efficiently on older, refurbished devices. Built on LineageOS.

NixOS Mobile
A full port of NixOS to a mobile platform. It's built on top of many previous efforts and relies on a tool to convert GTK applications to mobile equivalents.

Hobby

I got my Gameboy emulator running in my OS! : osdev. This is so inspirational. I love it. I would love to play this game boy game on this operating system. It sounds so fun and satisfying to have made and to use a stack like this!