Show HN: A DOS-like hobby OS written in Rust and x86 assembly (github.com)

73 points by krustowski 4h ago 6 comments

Show HN: Claude Code Usage Monitor – real-time tracker to dodge usage cut-offs (github.com)

137 points by Maciej-roboblog 8h ago 83 comments

Show HN: Unregistry – “docker push” directly to servers without a registry (github.com)

557 points by psviderski 18h ago 125 comments

Show HN: TrendFi – I built AI trading signals that self-optimize (trend.fi)

17 points by wolfman1 3d ago 10 comments

Show HN: EnrichMCP – A Python ORM for Agents (github.com)

12 points by bloppe 26m ago 0 comments

Show HN: Workout.cool – Open-source fitness coaching platform (github.com)

767 points by surgomat 1d ago 211 comments

Show HN: I built a tensor library from scratch in C++/CUDA (github.com)

114 points by nirw4nna 1d ago 25 comments

Show HN: EchoStream – A Local AI Agent That Lives on Your iPhone

2 points by shuhongwu 4h ago 0 comments

Show HN: PlutoBook – Fast, lightweight C++ library for generating PDF from HTML (github.com)

2 points by sammycage 5h ago 0 comments

Show HN: Gifty – A real-world gift hunt you play with your feet (gifty-en.vercel.app)

5 points by mrtranlyvu 3d ago 1 comments

Show HN: Free local security checks for AI coding in VSCode, Cursor and Windsurf

40 points by jaimefjorge 1d ago 22 comments

Show HN: VS Code extension to share code snippets instantly (snippetshare.dev)

25 points by petermukha 3d ago 19 comments

Show HN: Trieve CLI – Terminal-based LLM agent loop with search tool for PDFs (github.com)

31 points by skeptrune 1d ago 7 comments

Show HN: Buntal – Lightweight SSR and SPA web framework with less dependencies (buntaljs.org)

3 points by mgilangjanuar 6h ago 1 comments

Show HN: A color name API that maps hex to the closest human-readable name (meodai.github.io)

2 points by meodai 7h ago 0 comments

Show HN: I'm building an app to replace Overleaf and Notion

5 points by WolfOliver 7h ago 0 comments

Show HN: Lstr – A modern, interactive tree command written in Rust (github.com)

221 points by w108bmg 1d ago 66 comments

Show HN: Curated collection of the greatest photography books (photographybooks.top)

2 points by Henadz 8h ago 0 comments

Show HN: Some Pay Millions for McKinsey, Others Use BrainTerms (brainterms.ai)

3 points by Jderenne 8h ago 8 comments

Show HN: GitHub as Blogging Engine

4 points by revskill 8h ago 5 comments

Show HN: I made an online Unicode Cuneiform digital clock (oisinmoran.com)

107 points by OisinMoran 4d ago 34 comments

Show HN: ht-mcp – a Rust MCP server of headless terminal for agents (github.com)

25 points by alphag33k 1d ago 2 comments

Show HN: Delve, an open source (AGPL) enterprise-grade data analytics platform (github.com)

19 points by ilovetux 1d ago 19 comments

Show HN: Nexus.js - Fabric.js for 3D (punk.cam)

90 points by ges 2d ago 28 comments

Show HN: I built an app to organize fragmented learning (apps.apple.com)

4 points by ssthomas 21h ago 1 comments

Show HN: WFGY – A reasoning engine that repairs LLM logic without retraining (github.com)

10 points by WFGY 1d ago 6 comments

Show HN: Kentro – a fast Rust library for K-Means clustering (github.com)

3 points by amallia 19h ago 0 comments

Show HN: Chawan TUI web browser (chawan.net)

382 points by shiomiru 2d ago 66 comments

Show HN: Canine – A Heroku alternative built on Kubernetes (github.com)

316 points by czhu12 2d ago 122 comments

Show HN: DeepThink Plugin – Bring Gemini 2.5's parallel reasoning to open models

3 points by codelion 15h ago 0 comments

Show HN: Galaxy Explorer – Simple 3D Star Map Built with Three.js and Canvas 2D (v0-interactive-star-map.vercel.app)

3 points by baristaGeek 15h ago 0 comments

Show HN: Rulebook AI – rules and memory manager for AI coding IDEs (github.com)

20 points by botingw_job 1d ago 5 comments

Show HN: Agentic Trust – Enterprise MCP Server Platform for Secure AI Agents (agentictrust.com)

3 points by subramanya1997 18h ago 0 comments

Show HN: dk – A script runner and cross-compiler, written in OCaml (diskuv.com)

61 points by beckford 3d ago 9 comments

Show HN: Zeekstd – Rust Implementation of the ZSTD Seekable Format (github.com)

214 points by rorosen 3d ago 46 comments

Show HN: I recreated 90s Mode X demoscene effects in JavaScript and Canvas (jdfio.com)

184 points by gneissguise 2d ago 69 comments

Show HN: I built a FOSS tool to run your Steam games in the Cloud (github.com)

29 points by pierrebeucher 1d ago 8 comments

Show HN: PMDb – Public Movie Database (pmdb.dev)

15 points by darkotodoric 1d ago 5 comments

Show HN: Low-level Handwritten Digit recognition (github.com)

3 points by axxderotation 21h ago 0 comments

Show HN: AI Debate Arena – See Which LLM Argues Best (bot-bicker.vercel.app)

3 points by sillypuddy 21h ago 1 comments

Show HN: Tips for a lifetime Windows user switching to Mac (gist.github.com)

4 points by rofrol 22h ago 3 comments

Show HN: I made an app that lets you save audio to your Cameral Roll (justsendrecord.com)

35 points by zahirbmirza 1d ago 43 comments

Show HN: I couldn't poop, so I built an app to track digestion in real-time (digestrackapp.com)

2 points by YaccoHakon 23h ago 0 comments

Show HN: Easy Percentage Calculator (easypercentcalculator.com)

5 points by filipstefano 23h ago 0 comments

Show HN: Interactive Literature Reviews with Visual Knowledge Maps (proread.ai)

4 points by kanodiaashu 1d ago 1 comments

Show HN: Turn long form videos into short form clips (useclipfactory.com)

2 points by jmcbca04 1d ago 0 comments

Show HN: VerifyWise, an open-source governance platform for AI compliance (verifywise.ai)

4 points by gorkemcetin 1d ago 0 comments

Show HN: Brand Stori – AI audits your website like an enterprise buyer in 2min (brandstori.ai)

2 points by AnuraagTyagi 1d ago 5 comments

Show HN: Cpdown – Copy any webpage/YouTube subtitle as clean Markdown(LLM-ready) (github.com)

14 points by ysm0622 1d ago 3 comments

Show HN: MediaCMS v6 – open-source video platform with trimmer and RBAC (github.com)

12 points by provetza 1d ago 1 comments

Show HN: A DOS-like hobby OS written in Rust and x86 assembly

73 krustowski 6 6/19/2025, 1:38:57 PM github.com ↗

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

Comments (6)

rollcat · 3h ago

Memory-safe language. x86_64, with Arm on the roadmap. Networking stack. Boots from a CD and via multiboot. Your hobby project wipes the floor with DOS.

pvg · 2h ago

Whoa there. Gotta run Doom and BASIC to compete with DOS. That is the officially recognized DOS-Kármán line.

krustowski · 1h ago

What a challenge! Need to implement some interrupts it seems then, to provide an API for filesystem and so... Thank you for such idea

DrNosferatu · 2h ago

DOS-like but not DOS-compatible, correct?

krustowski · 2h ago

You are right. The first iteration however is 16bit and is very close to MS-DOS in terms of compatibility. Moreover, any OS that can handle simple disk I/O ops could be considered a DOS system too, innit?

leeter · 1h ago

Correct, there is a difference between MS-DOS and IBM-PC compatible and a DOS (ex: all the DOSes that existed for Amiga/Apple II/Commodore etc). There are many DOSes (and even MSDOSes, because yay early PC era incompatibilities!), but there is a very dubious list of things needed to be MS-DOS and IBM-PC compatible. You can probably do it if you're willing to setup a hypervisor and emulate some hardware.

NGL one of my long term projects was/is something exactly like this but UEFI and secure boot. The idea being to use the VM extensions to create IBM-PC and DOS compatible environments. For anything using DPMI[1] I'd probably do the same trick as Win95 did and just replace it with my own implementation so it's not too overburdened with layers.

[1] https://en.wikipedia.org/wiki/DOS_Protected_Mode_Interface