# wichtounet/thor-os

Simple operating system in C++, written from scratch

Repository: https://github.com/wichtounet/thor-os
Canonical: https://ross.abutalabs.com/products/thor-os
Language: C++
License: MIT
License Family: permissive
Topics: c-plus-plus, operating-systems, cpp, assembly, cpu, intel, network, multi-process
Last push: 2024-11-19T10:12:06+00:00

## Health v2 (maintenance only)
Score: 32/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 4711, "days_push": 652, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1720, forks 185 (observed 2026-08-28T04:05:26.783614+00:00)

## What it is
Thor is a 64-bit hobby operating system written from scratch in C++ with some assembly, targeting x86_64 only. It includes preemptive multiprocessing, drivers for keyboard, mouse, ATA, and Realtek networking, FAT32 filesystem support, ACPI via ACPICA, and ELF application loading.

## Use cases
- learn how to write an operating system from scratch
- study a real C++ kernel implementation
- explore x86_64 kernel development with paging and interrupts
- see how drivers like ATA and keyboard are implemented in an OS
- understand preemptive multiprocessing in a kernel
- find an osdev reference project in C++

## When to choose
- you want readable C++ source code for a hobby OS to learn OS development
- you need a working example of 64-bit kernel booting, ELF loading, and FAT32
- you are exploring osdev and want a reference beyond tutorials

## When to avoid
- you need a production or maintained operating system
- you want ARM or other non-x86_64 architecture support
- you need complete networking or a full driver ecosystem
- you want an OS with package management, GUI applications, or community support

## Facets
- artifact type: application
- maturity: abandoned
- function: networking, file-system, concurrency
- domain: operating-systems, developer-tools, education
- platform: cpp
- tags: osdev, hobby-os, from-scratch, learning-project, kernel, elf, fat32, acpi, drivers, operating-system, x86_64, assembly

## Member repositories
- wichtounet/thor-os (main) score 32

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:05:26.783614+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T03:34:06.165324+00:00, confidence not recorded.
  - readme: https://github.com/wichtounet/thor-os (fetched 2026-08-28T04:05:26.783614+00:00, sha d5aa7d4b768f)
- Data as of 2026-08-30T08:39:29.467469+00:00.