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

https://openciv3.org/
546•klaussilveira•9h ago•153 comments

The Waymo World Model

https://waymo.com/blog/2026/02/the-waymo-world-model-a-new-frontier-for-autonomous-driving-simula...
872•xnx•15h ago•527 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
78•matheusalmeida•1d ago•16 comments

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

https://github.com/valdanylchuk/breezydemo
186•isitcontent•10h ago•23 comments

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

https://github.com/pydantic/monty
189•dmpetrov•10h ago•84 comments

Unseen Footage of Atari Battlezone Arcade Cabinet Production

https://arcadeblogger.com/2026/02/02/unseen-footage-of-atari-battlezone-cabinet-production/
10•videotopia•3d ago•0 comments

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

https://vecti.com
298•vecti•12h ago•133 comments

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

https://github.com/microsoft/litebox
347•aktau•16h ago•169 comments

Dark Alley Mathematics

https://blog.szczepan.org/blog/three-points/
73•quibono•4d ago•16 comments

Sheldon Brown's Bicycle Technical Info

https://www.sheldonbrown.com/
343•ostacke•16h ago•90 comments

Hackers (1995) Animated Experience

https://hackers-1995.vercel.app/
441•todsacerdoti•18h ago•226 comments

Delimited Continuations vs. Lwt for Threads

https://mirageos.org/blog/delimcc-vs-lwt
16•romes•4d ago•2 comments

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

https://eljojo.github.io/rememory/
240•eljojo•12h ago•148 comments

PC Floppy Copy Protection: Vault Prolok

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

An Update on Heroku

https://www.heroku.com/blog/an-update-on-heroku/
378•lstoll•16h ago•256 comments

What Is Ruliology?

https://writings.stephenwolfram.com/2026/01/what-is-ruliology/
5•helloplanets•4d ago•1 comments

How to effectively write quality code with AI

https://heidenstedt.org/posts/2026/how-to-effectively-write-quality-code-with-ai/
222•i5heu•13h ago•168 comments

Why I Joined OpenAI

https://www.brendangregg.com/blog/2026-02-07/why-i-joined-openai.html
97•SerCe•6h ago•78 comments

Show HN: ARM64 Android Dev Kit

https://github.com/denuoweb/ARM64-ADK
14•denuoweb•1d ago•2 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...
20•gmays•5h ago•3 comments

Learning from context is harder than we thought

https://hy.tencent.com/research/100025?langVersion=en
162•limoce•3d ago•83 comments

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

https://github.com/phreda4/r3
63•phreda4•9h ago•11 comments

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

https://infisical.com/blog/devops-to-solutions-engineering
129•vmatsiiako•15h ago•56 comments

Introducing the Developer Knowledge API and MCP Server

https://developers.googleblog.com/introducing-the-developer-knowledge-api-and-mcp-server/
40•gfortaine•7h ago•11 comments

Understanding Neural Network, Visually

https://visualrambling.space/neural-network/
261•surprisetalk•3d ago•35 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/
1032•cdrnsf•19h ago•428 comments

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

https://github.com/dmtrKovalenko/zlob
6•neogoose•2h ago•3 comments

FORTH? Really!?

https://rescrv.net/w/2026/02/06/associative
56•rescrv•17h ago•19 comments

Show HN: Smooth CLI – Token-efficient browser for AI agents

https://docs.smooth.sh/cli/overview
85•antves•1d ago•62 comments

WebView performance significantly slower than PWA

https://issues.chromium.org/issues/40817676
20•denysonique•6h ago•3 comments
Open in hackernews

React Flow, open source libraries for node-based UIs with React or Svelte

https://github.com/xyflow/xyflow
168•mountainview•3mo ago

Comments

wallzero•3mo ago
This is an excellent library! I only wish it had react-native support.

I've worked on a few prototype react directed acyclical diagram libraries. jsplumb-react, react-yad, and recently @lincle.

@lincle is my most recent and first attempt at supporting react-native. I tried leveraging existing interactive libraries. I was also inspired by react-flow's minimap. It is still a prototype and needs documentation but works well. I'm realizing now the demo isn't working but the demo source should hopefully give an example of how to use it.

https://gitlab.com/digested/lincle

tcoff91•3mo ago
With expo DOM components it’s easy to just use this library and expo will wrap it in a webview. Then you can easily integrate it into a RN app.
NatKarmios•3mo ago
It's a lovely library :) I'm using it in my work on general interfaces for symbolic execution debugging.
iamcreasy•3mo ago
This is cool. Is there web component library/resources for something equivalent?
teunlao•3mo ago
Great library. Just memo your custom nodes properly - edge re-renders cascade faster than you'd expect.
gardnr•3mo ago
Obligatory Fireship video: https://www.youtube.com/watch?v=yl0YWA2K2B0&t=40
Sammi•3mo ago
It's quite impressive how many layers of oopsies there are in the React api now.

The curse of being successful as a software project: more people want more from you, but you are not allowed to actually remove cruft, because too many people depend on it.

19: 193 kB -> 60.3 kB (gzip) https://bundlejs.com/?q=react%4019.2.0%2Creact%4019.2.0%2Cre...

18: 142 kB -> 45.6 kB (gzip) https://bundlejs.com/?q=react%4018.3.1%2Creact%4018.3.1%2Cre...

braebo•3mo ago
The entire concept of mitigating un-intended re-rendering by wrapping your bad abstractions in more abstractions is not a category of problem for Svelte devs nor is it inherent to the platform like some inevitably of scale.

React is bad because its foundation is a bad abstraction (v-dom) and it’s spent over decade pilling on more leaky abstractions every year, leading to where we are now — clamoring over a mountain of footguns and indirection.

Sammi•3mo ago
Yes. VDOM is immediate mode. DOM is retained mode. Building immediate mode on top of retained mode is cursed.
throwaway290•3mo ago
React.memo(MyFlowNodeComponent) like this?
mootoday•3mo ago
I'm a long-time SvelteFlow user and it has never disappointed so far :).

Lots of updates this year to reach parity with React Flow.

randomdrake•3mo ago
This is a well-done library that’s fun to work with. I put together a proof of concept org chart generator[0] with it a while back when working on another project. Very easy to use and well-documented.

[0] - https://github.com/randomdrake/react-flow-org-chart

steve_taylor•3mo ago
Does React Flow still advertise itself unless you pay the developers at least $169/month?
aratahikaru5•3mo ago
You can programmatically remove the watermark, either via a flag or by changing the source code.

> [1] No, you can do whatever you want with it since it’s MIT

But if you use it in a commercial project, they'll likely shame you if you don't pay - like what happened to OpenAI with Agent Builder:

> [2] Hey @OpenAI :) We just saw that you are using our open source library React Flow We offer startup discount codes :) Let us know if you are interested

Personally, I’d prefer them to use a dual license, but I understand that it would likely create unnecessary hurdles for devs who just want to try out the library.

They explained their reasoning here: https://xyflow.com/blog/asking-for-money-for-open-source

[1] https://x.com/xyflowdev/status/1975660206441820585

[2] https://x.com/xyflowdev/status/1975505810768777360

watty•3mo ago
Agree, if they're going to guilt shame companies publicly and be defensive in replies, just dual license it. Not a great look.
taherchhabra•3mo ago
I am building https://www.flickspeed.ai using this library
CuriouslyC•3mo ago
Hah, this pops up right after I note how it's eating good with all the AI tools that use it. Deservedly so, if you're creating node based interfaces there's no reason to hand roll with D3.
krebby•3mo ago
I'm working on an open source tool called noodles.gl that uses this library and it's been great. The devs have been good about keeping a cadence of solid changes and keeping the community updated, and overall I'm happy to have bet on this library years ago.

I love the flexibility and the fact that there's a variety of examples for basically anything I want to accomplish with it. Great work to the team.

https://noodles.gl

Orochikaku•3mo ago
I really appreciated that they've made their pro examples available for free for education purposes. I made use of one of those examples for my undergraduate final year project.
carltheperson•3mo ago
This is a great library. I especially appreciate that they added a version for Svelte (with specific examples for Svelte 5).

It's very convenient how you create the graph, with nodes just being Svelte components. Adding custom edges isn't very hard either.

If you're curious what you can do with it, I made this demo for myself https://youtu.be/aVY7ySPiSo8 (never launched it). I used Svelte Flow to visualize AI doing research, my first project using LLMs.

sroussey•3mo ago
I use this library for some in browser AI stuff.

https://podley-web.netlify.app/

anorak27•3mo ago
I made a desktop UI using react flow with resizing and deletion of windows.

https://github.com/Anilturaga/Generative-UI

danielfalbo•3mo ago
Supabase uses this for the Visual Schema Designer https://supabase.com/features/visual-schema-designer
quintu5•3mo ago
I’ve used this library on a couple of projects with great results. One, a drag-and-drop IaC builder and the other a GitHub Actions-like task execution graph viewer.
icemelt8•3mo ago
We use this for our flow builder in https://wetarseel.ai
aurareturn•3mo ago
Just what I was looking for a project.
artur_makly•3mo ago
I made https://VisualFlows.io with it - among many other AI powered canvases:

https://www.design2dev.com/work/agentic-ai-canvases/

Contact me for UX consulting if you need it -;) artur at design2dev.com

mediumsmart•3mo ago
I was tempted for a moment but I think it needs JavaScript