Dev tools · alternatives · 2026
24 alternatives to I wrote an OS in 1000 lines of Zig
A minimal RISC-V 32-bit OS written in Zig. Contribute to botirkhaltaev/pico-os development by creating an account on GitHub.
This is a minimal operating system written in Zig, implemented in approximately 1000 lines of code. It demonstrates core OS concepts in a compact form. The project is intended for developers interested in low-level… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.
- 1
Hi HN, I’m Dvir, a young developer. Last year, I got rejected after a job interview because I lacked some CPU knowledge. After that, I decided to deepen my understanding in the low level world and learn how things work under the hood. I decided to try and create an OS in C and ASM as a way to broaden my knowledge in this area. This took me on the most interesting ride, where I’ve learned about OS theory and low level programming on a whole new level. I’ve spent hours upon hours, blood and tears, reading different OS theory blogs, learning low level concepts, debugging, testing and working on…
Oct 2025 · github.com · its alternatives →
- 2
Minimalist, dependency-free virtual machine sandbox for microcontrollers and other resource-constrained devices. Single C file, no dynamic memory allocations, asynchronous design, pure C99 - ringtailsoftware/uvm32
Dec 2025 · github.com · its alternatives →
- 3
32-bit RISC-V CPU in ~800 lines of C89. Contribute to mnurzia/rv development by creating an account on GitHub.
2023 · github.com · its alternatives →
- 4
I pretty much always have a kernel project going on, and have been that way for decades. Over the past couple of years, that's been Anos, which has gotten further along than any of my previous hobby kernels, supporting IPC, multitasking, SMP (x86-64 only right now) and running on real hardware. LLMs (mostly Claude Code) have been used during development, but I learned early on that it's not _great_ at code at this level, so I've restricted its use to mostly documentation and tests. There's _a little_ AI code in the user space, but I have a strict "no AI code" rule in the kernel itself. I…
Apr 2026 · github.com · its alternatives →
- 5
A multitasking monolithic Kernel based x86 targeting Operating System written in C# from scratch aiming for high-level implementation of drivers in managed environment. - amaneureka/AtomOS
2017 · github.com · its alternatives →
- 6IM
I've wanted to make my own OS since I started programming. Now, 5 years later, I did it (kind of). Sure, it is really basic, has very little functionality, but I made it and I'm proud of that. Oh, and I'm just 16 btw.
2025 · jotalea.com.ar · its alternatives →
- 7
This is my operating system that I've been working for the past 2 years. All of the code is written exclusively by me except from ported software. banan-os has a monolithic kernel targeting x86 (i686) and x86_64 architectures. The project consists of bootloader, kernel and userspace libraries (libc, libGUI, libFont, ...). It also uses my custom C++ standard library partly based on stdc++. Currently I have basic TTY and GUI environment with some of the basic UNIX utilities like cp, ls and stat. I have basic support for USB (keyboard/mouse/storage), disks (NVMe, AHCI), custom…
2024 · github.com · its alternatives →
- 8
A "living" Linux process with no memory. Contribute to izabera/zeromaps development by creating an account on GitHub.
2020 · github.com · its alternatives →
- 9
To try it out, simply build the project yourself from source, or use attached bootable ISO image of the system (in Releases on Github) and run it in QEMU. https://blog.vxn.dev/rou2exos-rusted-edition
2025 · github.com · its alternatives →
- 10MO
2016 · minocacorp.com · its alternatives →
- 11
Hello HN! Showing off the first version of Munal OS, an experimental operating system I have been writing in Rust on and off for the past few years. https://github.com/Askannz/munal-os It's an unikernel design that is compiled as a single EFI binary and does not use virtual address spaces for process isolation. Instead, applications are compiled to WASM and run inside of an embedded WASM engine. Other features: * Fully graphical interface in HD resolution with mouse and keyboard support * Desktop shell with window manager and contextual radial menus * PCI and VirtIO…
2025 · github.com · its alternatives →
- 12
(sorry about double posting, I forgot to put Show HN in front in the original https://news.ycombinator.com/item?id=43863689 thread) Hey all, As a follow up to my relatively successful series in x86 Assembly of last year[1], I started making an OS that fits in a boot sector. I am purposefully not doing chain loading or multi-stage to see how much I can squeeze out of 510bytes. It comes with a file system, a shell, and a simple process management. Enough to write non-trivial guest applications, like a text editor and even some games. It's a lot of fun! It comes with an SDK and…
2025 · github.com · its alternatives →
- 13
"interesting" VM in C. Let's see how this goes. Contribute to tekknolagi/carp development by creating an account on GitHub.
2014 · github.com · its alternatives →
- 14
This project contains no code from Linux, BSD, Minix, or any other OS. Everything up until this point is written entirely from scratch, including a pure microkernel (that only implements multiprocessor priority scheduling, memory management, and interprocess communication), a work-in-progress implementation of the standard C library, and a variety of servers that provide drivers and other essential OS functionality. At the time of writing this post, the servers provide drivers for the keyboard, NVMe SSDs (that works on real hardware), a Unix-like virtual file system (with a single root…
2024 · github.com · its alternatives →
- 15
I believe the best way to learn a language is by doing an in-depth project. This is my first Zig project intended for learning the ropes on publishing a Zig package. It turns out to be quite solid and performant. It might be a bit over-engineered. This little library is packed with the following features: - Building dependency graph from dependency data. - Performing topological sort on the dependency graph. - Generating dependence-free subsets for parallel processing. - Cycle detection and cycle reporting.
2025 · github.com · its alternatives →
- 16
Hi HN! I'm 13 and I built Aurion OS as a solo learning project over 14 days (~12 hours/day). It's a 32-bit x86 operating system written entirely in C and x86 Assembly with no external libraries. What it has: Custom bootloader and kernel VESA framebuffer graphics (1920x1080, double-buffered) Window manager with draggable, overlapping windows macOS-inspired dock with transparency PS/2 keyboard and mouse drivers ATA hard drive driver with filesystem PCI bus enumeration RTL8139 network driver (WIP) Real-time clock Runs on just 16MB RAM (up to 10 windows simultaneously) Built-in apps:…
Mar 2026 · github.com · its alternatives →
- 17
A single compiled binary that renders one curated status line for fish, bash and zsh, and binds the up arrow to its own history picker. The slowest module runs as a task via std.Io while the rest run alongside it, so a render costs about what its slowest probe costs.
Jul 2026 · yamafaktory.github.io · its alternatives →
- 18
Hi everybody, this was my project to learn Zig and RISC-V+x86_64 assembly. Not sure if anybody is actually interested in yet another Brainfuck compiler, so I'll just write up some random things I learned while building it! - A primitive assembly stitching compiler is 10x faster than the interpreter. Did not expect that. - The generated x86 code is really bad (e.g. it always uses 6 or 7 byte sized instructions with 32-bit immediates when there are much smaller ones) but it doesn't really matter. Good code generated by GCC and clang for transpiled Brainfuck->C is not much faster as it's…
2025 · github.com · its alternatives →
- 19
(Very) basic UNIX-like operating system built when I was younger - SamyPesse/devos
2013 · github.com · its alternatives →
- 20
Writing Redis from scratch in Zig.
2025 · github.com · its alternatives →
- 21
A minimal RISC-V RV32I disassembler. Contribute to andportnoy/riscv-disassembler development by creating an account on GitHub.
2020 · github.com · its alternatives →
- 22
An experimental Python-to-C transpiler and domain specific language for embedded high-performance computing - zanellia/prometeo
2021 · github.com · its alternatives →
- 23ZD
Hi everyone, I've made an open-source library for using design by contract (DbC) principles in the Zig programming language. It's called Zig-DbC, and it currently provides the following features: - A simple API to define preconditions, postconditions, and invariants. - Contracts are active in `Debug`, `ReleaseSafe`, and `ReleaseSmall` modes to catch bugs early. - All checks are removed at compile time in `ReleaseFast` mode for zero performance cost. - An optional mode to handle partial state changes in functions that return errors. - Transparent error handling that propagates errors from…
2025 · its alternatives →
- 24
Contribute to cmc-labo/tinyos-rtos development by creating an account on GitHub.
Apr 2026 · github.com · its alternatives →
Also compare
- MyraOS – My 32-bit operating system in C and ASM (Hack Club project) alternatives
- Tiny VM sandbox in C with apps in Rust, C and Zig alternatives
- RISC-V core written in 600 lines of C89 alternatives
- Anos – a hand-written ~100KiB microkernel for x86-64 and RISC-V alternatives
- A new hobby OS from “scratch” in C# alternatives
- I made my own OS from scratch because I was bored alternatives
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