Operating systems and system software

Explore operating system reimplementation and compatibility projects. Compare architectures, development status and public contribution resources.

Projects: 8

Completed means every reported percentage is 100%, or the project is explicitly marked complete. Each measurement keeps its original scope; code matching alone does not describe every part of a project.

How projects are ranked

Projects are sorted by the latest recorded repository star count. Stars indicate interest, not completion. Missing counts remain unknown.

warpedatom/offsetinspect

PowerShell toolkit for AMSI/Defender detection-boundary analysis and static malware triage maps byte offsets to detection triggers, plus YARA, entropy, string, and PE/imphash analysis. Companion to OffsetScan.

Target software or hardware
AMSI/Defender
Work type
Reverse engineering and documentation

Reported progress

Checklist completion≈0%

Release checklist — Version and documentation — 0/3 listed items checked; items are equally weighted

Source

agarwalkritik/garlic-gui

Garlic Decompiler (GUI) - A modern C++/Qt6 desktop interface for the Garlic Decompiler, bringing blazing-fast APK, DEX, JAR, and CLASS decompilation to Windows, Linux, and macOS.

Target software or hardware
Unknown
Work type
Reverse engineering and documentation

Reported progress

Checklist completion≈89%

Garlic Decompiler (GUI) — Roadmap — 8/9 listed items checked; items are equally weighted

Source

jiusanzhou/apkman

Reverse engineer Android APKs directly in your browser. DEX→Java decompiler, manifest parser, resource browser — all client-side via Rust/WASM.

Target software or hardware
Unknown
Work type
Reverse engineering and documentation

Reported progress

Checklist completion≈67%

APKMan — Roadmap — 6/9 listed items checked; items are equally weighted

Source

crifan/autogenfridahookandroidcode

Auto generate Frida hook js code for Android class and functions from config or (jadx/JEB decompiled) java source file

Target software or hardware
Unknown
Work type
Reverse engineering and documentation

Reported progress

Checklist completion≈33%

AutoGenFridaHookAndroidCode — TODO — 1/3 listed items checked; items are equally weighted

Source

seanpm2001/wacos_11

The guesthouse repository for WacOS 11, an open source recreation of MacOS 11.x (Big Sur). Part of the WacOS operating system project.

Target software or hardware
MacOS 11.x
Work type
Reimplementation and compatibility

Reported progress

Checklist completion≈100%

WacOS 11 — Features — System requirements — 8/8 listed items checked; items are equally weighted

Source

seanpm2001/wacos_10.14

The guesthouse repository for WacOS 10.14, an open source recreation of MacOS 10.14 (Mojave). Part of the WacOS operating system project.

Target software or hardware
MacOS 10.14
Work type
Reimplementation and compatibility

Reported progress

Checklist completion≈100%

WacOS 10.14 — Features — System requirements — 7/7 listed items checked; items are equally weighted

Source

ckchdx/symbian-revival-patch

This Project aims to revive and rewrite Symbian OS for modern needs that works as a desktop, mobile or tablet while keeping core kernel with modern layer such as network support and bluetooth 4 thus multi touch support on arm and x86 hardware. This also works on x64 hardware.

Target software or hardware
Symbian OS
Work type
Reimplementation and compatibility

Reported progress

Checklist completion≈40%

Symbian Revival Operating System — 🎯 Implementation Roadmap — Phase 1: Foundation (Weeks 1–4) — 2/5 listed items checked; items are equally weighted

Source

yunoratsu/list

A lightweight reimplementation of the Unix ls command in C — built for learning file handling, CLI argument parsing, and portable system programming. Includes colorized output, basic file metadata, and a roadmap for adding options like -a, -l, and human‑readable sizes.

Target software or hardware
Unix ls command
Work type
Reimplementation and compatibility

Reported progress

Checklist completion≈0%

Roadmap — 0/5 listed items checked; items are equally weighted

Source