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OpenCiv3: Open-source, cross-platform reimagining of Civilization III

https://openciv3.org/
604•klaussilveira•11h ago•180 comments

The Waymo World Model

https://waymo.com/blog/2026/02/the-waymo-world-model-a-new-frontier-for-autonomous-driving-simula...
912•xnx•17h ago•545 comments

What Is Ruliology?

https://writings.stephenwolfram.com/2026/01/what-is-ruliology/
28•helloplanets•4d ago•21 comments

How we made geo joins 400× faster with H3 indexes

https://floedb.ai/blog/how-we-made-geo-joins-400-faster-with-h3-indexes
100•matheusalmeida•1d ago•24 comments

Unseen Footage of Atari Battlezone Arcade Cabinet Production

https://arcadeblogger.com/2026/02/02/unseen-footage-of-atari-battlezone-cabinet-production/
29•videotopia•4d ago•1 comments

Show HN: Look Ma, No Linux: Shell, App Installer, Vi, Cc on ESP32-S3 / BreezyBox

https://github.com/valdanylchuk/breezydemo
207•isitcontent•12h ago•24 comments

Monty: A minimal, secure Python interpreter written in Rust for use by AI

https://github.com/pydantic/monty
206•dmpetrov•12h ago•98 comments

Show HN: I spent 4 years building a UI design tool with only the features I use

https://vecti.com
315•vecti•14h ago•138 comments

Microsoft open-sources LiteBox, a security-focused library OS

https://github.com/microsoft/litebox
354•aktau•18h ago•180 comments

Sheldon Brown's Bicycle Technical Info

https://www.sheldonbrown.com/
360•ostacke•18h ago•94 comments

Hackers (1995) Animated Experience

https://hackers-1995.vercel.app/
465•todsacerdoti•19h ago•232 comments

Jeffrey Snover: "Welcome to the Room"

https://www.jsnover.com/blog/2026/02/01/welcome-to-the-room/
4•kaonwarb•3d ago•1 comments

Delimited Continuations vs. Lwt for Threads

https://mirageos.org/blog/delimcc-vs-lwt
24•romes•4d ago•3 comments

Show HN: If you lose your memory, how to regain access to your computer?

https://eljojo.github.io/rememory/
262•eljojo•14h ago•156 comments

An Update on Heroku

https://www.heroku.com/blog/an-update-on-heroku/
398•lstoll•18h ago•271 comments

Dark Alley Mathematics

https://blog.szczepan.org/blog/three-points/
80•quibono•4d ago•20 comments

PC Floppy Copy Protection: Vault Prolok

https://martypc.blogspot.com/2024/09/pc-floppy-copy-protection-vault-prolok.html
54•kmm•4d ago•3 comments

Was Benoit Mandelbrot a hedgehog or a fox?

https://arxiv.org/abs/2602.01122
8•bikenaga•3d ago•2 comments

How to effectively write quality code with AI

https://heidenstedt.org/posts/2026/how-to-effectively-write-quality-code-with-ai/
238•i5heu•14h ago•181 comments

Introducing the Developer Knowledge API and MCP Server

https://developers.googleblog.com/introducing-the-developer-knowledge-api-and-mcp-server/
49•gfortaine•9h ago•15 comments

I spent 5 years in DevOps – Solutions engineering gave me what I was missing

https://infisical.com/blog/devops-to-solutions-engineering
138•vmatsiiako•17h ago•60 comments

Understanding Neural Network, Visually

https://visualrambling.space/neural-network/
273•surprisetalk•3d ago•37 comments

Why I Joined OpenAI

https://www.brendangregg.com/blog/2026-02-07/why-i-joined-openai.html
126•SerCe•8h ago•107 comments

Female Asian Elephant Calf Born at the Smithsonian National Zoo

https://www.si.edu/newsdesk/releases/female-asian-elephant-calf-born-smithsonians-national-zoo-an...
28•gmays•7h ago•9 comments

Show HN: R3forth, a ColorForth-inspired language with a tiny VM

https://github.com/phreda4/r3
68•phreda4•11h ago•13 comments

Vocal Guide – belt sing without killing yourself

https://jesperordrup.github.io/vocal-guide/
7•jesperordrup•2h ago•1 comments

I now assume that all ads on Apple news are scams

https://kirkville.com/i-now-assume-that-all-ads-on-apple-news-are-scams/
1051•cdrnsf•21h ago•432 comments

FORTH? Really!?

https://rescrv.net/w/2026/02/06/associative
61•rescrv•19h ago•22 comments

Learning from context is harder than we thought

https://hy.tencent.com/research/100025?langVersion=en
171•limoce•3d ago•93 comments

Zlob.h 100% POSIX and glibc compatible globbing lib that is faste and better

https://github.com/dmtrKovalenko/zlob
15•neogoose•4h ago•9 comments
Open in hackernews

Arcol simplifies building design with browser-based modeling

https://www.arcol.io/
59•joeld42•8mo ago

Comments

joeld42•8mo ago
We're launching Arcol today! Check it out. Modern CAD tool, built for the browser with Rust+Typescript for high performance and an elegant UX.

Check out the announce video that explains some of the ideas behind it: https://www.linkedin.com/posts/paul-o-carroll-38aaa1105_arco...

Feel free to post any questions and I'll do my best to answer!

bhouston•8mo ago
Looks a bit like the ThreeJS editor reskinned. Is it using ThreeJS?
joeld42•8mo ago
It is using ThreeJS for the 3D rendering, with a custom Rust geometry kernel to generate the mesh buffers to render. The editor interface is React based.
Twinklebear•8mo ago
Pretty general question, but what has your approach been for coupling ThreeJS + React w/ a Rust/Wasm kernel for mesh generation? E.g. do you have Wasm own the memory and you give ThreeJS views of the memory to upload to GPU?
joeld42•8mo ago
We don't need to update the scene at once, so when geometry changes we rebuild the buffer and send it over to typescript, and the three.js mesh will own the buffer. By being careful about what needs to be updated, we can keep things interactive.

This is an older blog post but it covers the general idea of it: https://blog.arcol.io/parametric-geometry-engine

prideout•8mo ago
Currently we simply copy a slice of the heap's ArrayBuffer from WASM to JS. In the past we exposed the heap slice directly but it was technically "unsafe" (perhaps because the heap can grow), and doing a copy did not hurt performance in any measurable way.
hooverd•8mo ago
Hehe, I imagine the back-and-forth between the architects and structural/mechanical/HVAC guys will be glorious.
joeld42•8mo ago
haha yeah! It feels like a real pain point in the industry right now. Hopefully we can make it easier for communication between design, engineering and construction.
gervwyk•8mo ago
Well done for zoning in on this problem. Many will try to solve this with a better email or kanban workflow or internal tooling. It takes some imagination to build something better. This solution looks very creative (i’m not in the industry so would not know what is the normal for this) and congrats on the launch!
an_aparallel•8mo ago
Building services bow down to their structural overlords, we generally dont have a say unless we absolutely cannot squeeze duct in a given space.
itishappy•8mo ago
As somebody outside of the industry, what's the final output of this product? I don't see doors, so I'm assuming this tool is intended to be used to rough out shapes and costs collaboratively? I totally see the utility in having a collaborative tool at those early stages. How far does Arcol go? Can it spit out blueprints?

Also, being asked to login to view the demo vid is jarring. The play button signifies a video to me, if it's a demo I'd choose a different symbol (and put it somewhere other than the center of the video).

joeld42•8mo ago
Exactly, at this stage, the output is mainly for feasibility, presentations and communication. But we can also export models to Revit or 3D formats like GLTF to use in the next steps of the process, or for renders, etc. But we're planning to continue to add features to make it useful further down the AEC pipelines.

Good point about the play button, I'll pass that feedback along. :)

itishappy•8mo ago
Neat, love it!
realitysballs•8mo ago
Huge fan of anyone daring enough to take on Autodesk , also product is top notch design.
joeld42•8mo ago
Thanks! We love to hear it!
shocka_z•8mo ago
How does this compete with Autodesk's Revit & BIM Collaborate?
joeld42•8mo ago
It coexists with Revit right now, and is a good place to do feasibility and early design and get instant metrics and feedback. We think it's a lot more collaborative and design friendly.

One day we'd love to take them on directly, I think there's a lot of architects out there looking for something better.

As far as collaboration features, we've built it from the ground up with collaboration in mind, so you can work with other users directly in the same scene and see their actions and updates. We've got collaborative presentation boards with views and metrics that can update live, and of course workflow features like commenting. And since it's browser based, there's not the friction of installing a desktop app, which can be significant at some orgs.

We'd love to know what you think though, give it a try and let us know what collaboration features you'd use!

the_arun•8mo ago
Will there be a workflow? For eg. review & approvals and changing state of the final design?
joeld42•8mo ago
We're hoping to provide tools that let firms build whatever workflows they need.

Right now, we have design options to present and compare different options and variants of scenes, and boards and comments, but we don't enforce any workflow.

Looking at how customers use these features and adding tools to enable this is definitely a big focus in the near term.

dfex•8mo ago
This looks amazing!

I'm working on a construction project right now (not as an architect/engineer) and I can tell you right now that live collaboration is THE killer feature (your slick UI not withstanding).

If this job is anything to go by, the current state-of-the-art appears to be a single Revit model file released once a month, 10,000 excel spreadsheets and 3,000 PDFs of various versions and quality spread between Sharepoint and a Document management server.

I'm sure you've got an amazing roadmap, but it would be great to see you apply a modern take on:

- how to handle version control in a multi-user environment (endless designing is fun, but at some point you need to draw a line in the sand so that people can start work, then changes need to be highlighted for the guy on the ground swinging a hammer)

- collaboration with 3rd-parties that may have a subset of design responsibilities (e.g. HVAC, electrical - they can place things in a room, but can't adjust the dimensions of a room)

- design reviews - current state-of-the-art seems to be marking up PDFs of DWGs with comments (which the supplier completely ignores on their next revision)

I look forward to watching this product evolve!

Small typo on your Love Letter to Designers post:

"A promise we will make at Arcol is tolisten first"

joeld42•8mo ago
Exactly! It’s great to see that this idea resonates!
xeonmc•8mo ago
How suitable might this also be for game level design, for more vertical arena-like maps?
joeld42•8mo ago
hmm, i've played around a bit with level design in the past and honestly Arcol wouldn't be that great a fit. I like Probuilder in Unity for that, I think the key to any good workflow is immediate changes and fast iteration, so you really want something that's pretty tightly integrated into your game engine.

It could be useful for greyboxing or even just generating some rough shapes though. We do export GLTF which is easy to get into game engines.

an_aparallel•8mo ago
Ive started work recently as a Revit MEP modeller. Id recommend your team look into a way of supporting common services models like vav/fcu/flex ducts/rect ducts, pipes, cable trays, conduit and so on.

Im not experienced enough to know if early stage mep designers will find this useful.

joeld42•8mo ago
yeah, great idea. Eventually we'd love to get there, supporting all stages of the AEC pipeline. But the scope is so huge we can't give it the level of design attention and polish that we want if we try to do everything, so we're focused on feasibility for now and try and make a great experience for that.
dbetteridge•8mo ago
Looks good!

Did a brief stint at one of your competitors and it's really cool how far browser based engineering tools have come in the years since I worked on them at Arup.

Webassembly is a blessing for that I imagine.

polskibus•8mo ago
Shouldn’t this be a launch HN/ shown HN?