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

https://openciv3.org/
552•klaussilveira•10h ago•156 comments

The Waymo World Model

https://waymo.com/blog/2026/02/the-waymo-world-model-a-new-frontier-for-autonomous-driving-simula...
874•xnx•15h ago•531 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
79•matheusalmeida•1d ago•17 comments

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

https://github.com/valdanylchuk/breezydemo
191•isitcontent•10h ago•24 comments

Unseen Footage of Atari Battlezone Arcade Cabinet Production

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

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

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

What Is Ruliology?

https://writings.stephenwolfram.com/2026/01/what-is-ruliology/
7•helloplanets•4d ago•3 comments

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

https://vecti.com
303•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

Sheldon Brown's Bicycle Technical Info

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

Dark Alley Mathematics

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

Hackers (1995) Animated Experience

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

PC Floppy Copy Protection: Vault Prolok

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

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

https://eljojo.github.io/rememory/
242•eljojo•13h ago•148 comments

Delimited Continuations vs. Lwt for Threads

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

An Update on Heroku

https://www.heroku.com/blog/an-update-on-heroku/
379•lstoll•16h ago•258 comments

How to effectively write quality code with AI

https://heidenstedt.org/posts/2026/how-to-effectively-write-quality-code-with-ai/
224•i5heu•13h ago•170 comments

Why I Joined OpenAI

https://www.brendangregg.com/blog/2026-02-07/why-i-joined-openai.html
103•SerCe•6h ago•82 comments

Learning from context is harder than we thought

https://hy.tencent.com/research/100025?langVersion=en
162•limoce•3d ago•85 comments

Introducing the Developer Knowledge API and MCP Server

https://developers.googleblog.com/introducing-the-developer-knowledge-api-and-mcp-server/
41•gfortaine•8h 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
131•vmatsiiako•15h ago•56 comments

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

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

Show HN: ARM64 Android Dev Kit

https://github.com/denuoweb/ARM64-ADK
14•denuoweb•1d ago•2 comments

Understanding Neural Network, Visually

https://visualrambling.space/neural-network/
262•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/
1034•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•18h ago•19 comments

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

https://docs.smooth.sh/cli/overview
85•antves•1d ago•63 comments

WebView performance significantly slower than PWA

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

Show HN: ASCII Tree Editor

https://asciitree.reorx.com/
30•novoreorx•5mo ago
Show HN: ASCII Tree Editor

I've created a web-based editor for ASCII file directory trees called asciitreeman. It's designed to make it easier to edit and reorganize the output of the tree command.

You can try it out here: https://reorx.github.io/asciitreeman/

And the source code is on GitHub: https://github.com/reorx/asciitreeman

Some of the key features include visual tree editing with drag-and-drop-like operations, real-time sync where changes are immediately reflected in the ASCII output, keyboard shortcuts for navigation (J/K or arrow keys), and auto-saving your work to local storage.

What's interesting is that I used Claude Code to "vibe-code" this project in a very short amount of time. It was a fun experiment in AI-assisted development. For those curious about the process, I've included the prompts and specifications I used in the source code. You can check them out in the spec.md and CLAUDE.md files in the repository.

Hop you find it useful!

Comments

ycombiredd•5mo ago
You might find this a useful companion to your tool.

https://github.com/scottvr/retree

novoreorx•5mo ago
That's pretty neat! My motivation is to manipulate tree structures to provide them to LLM. Retree does the opposite, taking tree text as input to create a real file system hierarchy. Next time I want to create a new project based on the tree I edited through ASCII Tree Editor, I can use retree to do this.
chrismorgan•5mo ago
I’m sure lots of people will think this, so I’ll say it—

Box-drawing characters (U+2500–U+257F) are not ASCII (U+0000–U+007F).

There, got it out of my system. :-)

(I know, “ASCII art” colloquially means more than just the ASCII range.)

Timwi•5mo ago
Indeed! I was disinclined to even look at this project because it said ASCII when the box-drawing characters are obviously a lot more suitable. It should say “text-only” or “plain-text” or similar instead.
guidedlight•5mo ago
They sort of are.

I think the confusion arises because the IBM PC ASCII (code page 437) included comprehensive box-drawing characters between hexidecimal character positions B3 and DA. These weren't adopted into Unicode in the same character positions, but the box-drawing characters were definitely part of the commonly understood ASCII character set.

But I think that this ASCII tree editor should have a toggle option for basic vs extended ASCII, by utilising +, -, and | characters.

chrismorgan•5mo ago
ASCII is a 7-bit encoding. That’s it.

Honestly I’m not even convinced it’s entirely fair to call code page 437 a superset of ASCII, with how it repurposes the control codes 0x01–0x1F and 0x7F. (Superset of printable ASCII, definitely. It just feels not quite right to call it a superset of ASCII as a whole, though it is generally considered so.)

(And I can’t find any references to code page 437 being called “IBM PC ASCII”.)

novoreorx•5mo ago
My understanding of ASCII was influenced by tools like ASCIIDraw and ASCIIFlow, which I used them like almost 10 years ago. Inside my mind there's a voice with the same opinion of yours, but I still quite used to call plain-text drawings as "ASCII". LOL
Gormo•5mo ago
> (I know, “ASCII art” colloquially means more than just the ASCII range.)

I recall "ASCII art" always referring to art made with the 7-bit character set, and art made with the extended CP437 characters (and including color, etc.) always being called "ANSI art".

adi_hn07•5mo ago
Seems like a cool project !! Can you implement auto-parse as soon as the tree is pasted? Right now we can use arrow keys to reorder files, would love drag and drop ability for that too.

Would love to have ASCII Tree Editor on https://www.superlaun.ch

novoreorx•5mo ago
Thank you, I'm glad you find it useful! The reason I didn't implement auto-parsing in the text editor is that I want it to avoid affecting the tree component on the left side. Sometimes, I like to write something before copying the tree. It's like a scratchpad for me to finalize the text I want. Also, since it's auto-generated, if it were also auto-parsed, it could cause an infinite loop whenever anything is changed.

Drag-and-drop functionality was actually the first thing I considered. However, I want to keep the code clean and avoid involving too many third-party libraries. So, I came up with this method to make reordering easy while keeping it simple to implement.

I will submit it to Superlaunch, although I feel that it might not be valuable enough to be considered a product :)

Timwi•5mo ago
Both your link, and the “Live Demo” link in the GitHub readme, are dead links.
novoreorx•5mo ago
Thank you for bringing this issue to my attention. I forgot to publish it to GitHub Pages, which caused the reorx.github.io/asciitreeman link to be inactive (I've just fixed that). However, the main link for this news should be working, as it is deployed on Cloudflare. If you cannot see it, it is likely an edge CDN problem with Cloudflare.
deadbabe•5mo ago
If you vibe code a project, just share your prompts and the output they produce, no one should really care about what your specific code looks like because the prompts should generate a fully custom version of the same app from scratch.

Otherwise, it’s like showing assembly code for some program you wrote. No one cares about the machine code, just give the highest level language.

novoreorx•5mo ago
Totally agree and I've already mentioned that in the post, the prompts are in CLAUDE.md and spec.md, actually, my purpose of providing the repo url is for anyone interested to check the prompt, not the source code.

For your convenient, here's the link (it's written in Chinese, that what I really forget about): https://github.com/reorx/asciitreeman/blob/master/spec.md

deadbabe•5mo ago
Thank you, it’s promptware