544 Open source projects that are alternatives of or similar to Ultra

(Inactive, Checkout AvanaOS, Rewrite of this) This is a New Operating System (Kernel right now). Made completely from scratch, We aim to make a complete OS for Learning purpose

A simple OS running on Intel x86 architecture | No longer updating

a little 64bit operating system written in c++ with smp support

Dennix is a unix-like hobbyist operating system written from scratch.

opuntiaOS - an operating system targeting x86, ARMv7, Aarch64

Non-unix, custom-API hybrid OS kernel written in C++ which can be thought of as an emulated microkernel. The native API is almost fully asynchronous and the kernel is aimed at high-scaling, high-throughput-requiring multiprocessor workloads, with working support for SMP and NUMA already implemented. Join the IRC channel, #zbz-dev on freenode!

📚 Learn to write an embedded OS in Rust 🦀

🚪Own experiments operating systems🚪

An open-source Unix operating system

🍬 All-new kernel for @GreenteaOS

Ping-Pong-like game in Assembly that works without OS

Vinix is an effort to write a modern, fast, and useful operating system in the V programming language

Super-simple OS

A small kernel + OS based on how dreams work

A completely-from-scratch hobby operating system: bootloader, kernel, drivers, C library, and userspace including a composited graphical UI, dynamic linker, syntax-highlighting text editor, network stack, etc.

Free Pascal Operating System (FPOS) is a operating system consists of a minimal kernel built on FreePascal. It contains a Scheme implementation of a hard drive (ATA) driver, keyboard (PS2), serial (8250 UART), FAT32 filesystem and a small real time clock manager. The project was built to experiment with developement of operating system using a h…

🏠 Homepage of the @GreenteaOS

// Source : ISO

JS-based Linux desktop environment.

Operating system for x86_64 based around a "keep it simple and make it work" philosophy.

A free Windows-compatible Operating System

Operating System

Experimental operating system written in Zig

An operating system written in C

Free cooperative operating system (OS) for microcontrollers

Systeme d'exploitation

后台开发基础知识总结（春招/秋招）

MoonOS (just a kernel atm) is a micro kernel designed for the x86_64 and arm architecure.

A simple hobby operating system for the x86-64 architecture, written in C.

A toy monolithic kernel written in C++

RocketOS is a Unix based OS that uses legacy BIOS and GRUB and is written in C17. It is being developed for educational purposes primarily, but it still is a serious project. It is currently in its infancy.

A curated list of awesome things related to HarmonyOS. 华为鸿蒙操作系统。

The Lemon Operating System https://lemonos.org

《30天自制操作系统》源码中文版。自己制作一个操作系统（OSASK）的过程

An AArch64 hobbyist OS for the Raspberry Pi 3 B+

💿 Web-based Windows 98 desktop recreation █████▓█▓▓▒▓▒▒░▒░░░🗕︎🗗︎🗙︎

AquilaOS: UNIX-like Operating System

Arch Linux Based Custom ISOs Made With "Archiso"

The extensible bootloader for embedded system with application engine, write once, run everywhere.

Kernel for my operating system KoraOS

A UNIX-like kernel for the i386 architecture

Prototype HTML5 Desktop OS

鸿蒙系统资料。Docs about HarmonyOS.

My Operating System.

SerenityOS is a love letter to '90s user interfaces with a custom Unix-like core. It flatters with sincerity by stealing beautiful ideas from various other systems.

📗 How to write cross-platform Node.js code

A hobby operating system developed from scratch

Microkernel and userspace written in Rust exploring modern ideas

NOTICE: The ToaruOS-NIH Project has been MERGED UPSTREAM. This repository is now archived.

Lua + SQLite + musl libc running on x86.

Frosted: Free POSIX OS for tiny embedded devices

👨‍💻An operating system, built from scratch in C.

Unikraft is an automated system for building specialized POSIX-compliant OSes known as unikernels. (Core repository)

UNIX-like operating system written in C and C++

A community driven OS by the youth

FOMOS stands for: Free, Open source, Mobile, Operating, System.

🍵 Userspace of the @GreenteaOS

A simple, clean code, multi-tasking operating system written in pure assembly language for 64-bit processors from the AMD64 family.

A micro real-time operating system supporting task switching, delay function, memory allocator and critical section. It is writen on ARM Cortex-M3 assemble language, it runs successfully on STM32F103 MCU.