osdev

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.

c kernel x86-64 os osdev operating-system text-editor window-manager toaruos smp x86 bootloader operating-systems compositor aarch64 armv8 c-library baremetal cdrom

UpdatedNov 18, 2025
C

ravynsoft /ravynos

Star6.5k

An open-source OS project that aims to provide source and binary compatibility with macOS® and a similar user experience.

c macos freebsd unix objective-c cpp darwin desktop osdev operating-system cocoa hacktoberfest mach xnu

UpdatedDec 9, 2025
C

rcore-os /rCore

Star3.6k

Rust version of THU uCore OS. Linux compatible.

rust mips x86-64 osdev riscv aarch64

UpdatedAug 24, 2023
Rust

unikraft /unikraft

Star3.4k

A next-generation cloud native kernel designed to unlock best-in-class performance, security primitives and efficiency savings.

security application library performance cloud kernel microservice virtualization os osdev operating-system unikernel qemu cloud-native hacktoberfest unikraft unikernels

UpdatedDec 9, 2025
C

nanovms /nanos

Star3k

A kernel designed to run one and only one application in a virtualized environment

security microservice sandbox virtualization osdev edge unikernel operating-systems unikernels

UpdatedDec 14, 2025
C

skift-org /skift

Star2.9k

🥑 A modern delightful operating system

c-plus-plus kernel cpp osdev operating-system desktop-environment userspace skift

UpdatedDec 14, 2025
C++

nebulet /nebulet

Star2.4k

A proof-of-concept microkernel that implements a WebAssembly "usermode" that runs in Ring 0.

rust webassembly osdev operating-system microkernel nebulet

UpdatedFeb 28, 2023
Rust

icexin /eggos

Star2.3k

A Go unikernel running on x86 bare metal

go golang kernel wasm osdev unikernel netstack

UpdatedJul 22, 2023
Go

jubalh /awesome-os

Sponsor

Star2k

A list of operating systems and stuff

linux awesome kernel linux-kernel os osdev operating-system awesome-list os-dev

UpdatedAug 14, 2025

hermit-os /hermit-rs

Star1.9k

Hermit for Rust.

rust virtualization osdev operating-system rust-lang unikernel high-performance-computing cloud-computing operating-systems

UpdatedDec 15, 2025
Rust

o8vm /octox

Sponsor

Star1.6k

Unix-like OS in Rust inspired by xv6-riscv

rust osdev riscv xv6-riscv

UpdatedSep 24, 2025
Rust

rust-osdev /uefi-rs

Star1.5k

Rusty wrapper for the Unified Extensible Firmware Interface (UEFI). This crate makes it easy to develop Rust software that leverages safe, convenient, and performant abstractions for UEFI functionality.

rust osdev uefi