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A brief history of the Bloomberg terminal

https://spectrum.ieee.org/bloomberg-terminal
83•rbanffy•3h ago•22 comments

Launch HN: Magnitude (YC S25) – Self-optimizing inference engine for agents

https://github.com/magnitudedev/magnitude
6•anerli•7m ago•1 comments

You Said No MCP

https://earendil.com/posts/you-said-no-mcp/
467•yarapavan•7h ago•273 comments

Commit Description as a Thinking Tool

https://yedhu.me/posts/commit-description-as-a-thinking-tool/
9•yedhukrishnan•27m ago•0 comments

I Could've Accessed 17T Microsoft Records

https://blog.faav.net/how-i-couldve-accessed-17-trillion-microsoft-records
122•luispa•1d ago•56 comments

SDF vs. MSDF vs. Slug: GPU Text Rendering

https://alphapixeldev.com/sdf-vs-msdf-vs-slug-vs-rive-gpu-text-rendering/
75•ibobev•3h ago•35 comments

Bild AI (YC W25) Is Hiring a Founding Product Engineer

https://www.ycombinator.com/companies/bild-ai/jobs/dAbC3Gd-founding-product-engineer
1•rooppal•45m ago

Moist-Electric Wallpaper for Indoor Energy Harvesting and Humidity Management

https://advanced.onlinelibrary.wiley.com/doi/10.1002/aenm.71603
24•croes•1h ago•14 comments

Burning Man Death Rates – A Short Lesson in Statistics

https://ihavenapkinthoughts.substack.com/p/burning-man-death-rates-a-short-lesson
25•viraj_shah•1d ago•6 comments

SDF Public Access Unix System ... est. 1987

https://sdf.org/
28•kmstout•3h ago•3 comments

Reverse-engineering a $35 backup camera display (AMT630A)

https://github.com/mogrinz/AMT630A
32•mogrinz•1d ago•10 comments

The last time my family was replaced by technology

https://manuel.darcemont.fr/posts/the-last-time-my-family-was-replaced-by-technology/
50•megalomanu•4h ago•115 comments

Livenerf: Has Opus 5.5 been nerfed yet?

https://github.com/ninjahawk/livenerf
826•bryan0•19h ago•343 comments

Show HN: JBR-001 – An open-source 3D printable desktop robot

https://projecthub.arduino.cc/syntheticaidata/jbr-001-a-desktop-companion-robot-powered-by-arduin...
103•gvuksic•1d ago•23 comments

What TLA+ can and can't check

https://buttondown.com/hillelwayne/archive/what-tla-can-and-cant-check/
27•b-man•3h ago•4 comments

Mathematical Origami

https://mathigon.org/origami
84•signa11•1d ago•19 comments

Solving Factorio Quality

https://exyr.org/2026/solving-factorio-quality/
219•laurenth•1d ago•79 comments

Getting out of the way: my robotics crash course

https://thisismypersonalblog.com/posts/2026-09-25-getting-out-of-the-way/
37•systemerror•2d ago•7 comments

Dots: Always-on agents

https://openai.com/index/introducing-dots/
717•alvis•1d ago•604 comments

Vermont replacing power plants with home batteries

https://www.bbc.com/future/article/20260928-a-virtual-power-plant-hidden-in-vermont-homes-is-keep...
337•devonnull•23h ago•248 comments

NASA asked several former SR-71A staffers to help secret restart

https://aviationweek.com/defense/aircraft-propulsion/nasa-asked-several-former-sr-71a-staffers-he...
278•ilamont•1d ago•309 comments

America.gov

https://america.gov/
732•plesiv•1d ago•661 comments

Show HN: Dental Scope – Interactive 3D dental anatomy

https://dental-scope.com/
77•Zeruxe•1d ago•47 comments

Show HN: Ledge.sh – Runnable Markdown Notes

https://ledge.sh
26•dancablam•18h ago•17 comments

Let's Ditch Google (Verb)

https://adam.farkas.pro/lets-ditch-google-verb/
45•speckx•27m ago•47 comments

U.S. postal inspectors shut down website selling counterfeit postage labels

https://postalemployeenetwork.com/news/2026/09/26/u-s-postal-inspectors-shut-down-website-selling...
267•ilamont•22h ago•155 comments

Show HN: Real-time Solar System with 526k asteroids and all tracked satellites

https://space.bl2.net/
350•wanick•22h ago•93 comments

Show HN: Parrot – Open-Source Smart Meeting Recorder with Co-Pilot on Mac

https://openparrot.app
4•turantekin•2h ago•1 comments

Phyllotaxis: An audio-reactive LED display

https://jagi.studio/posts/phyllotaxis/
330•evakhoury•2d ago•48 comments

How Delhi cut electricity loss from 50 to 5 percent

https://spectrum.ieee.org/delhi-electricity-loss
571•rbanffy•1d ago•309 comments
Open in hackernews

Show HN: Ledge.sh – Runnable Markdown Notes

https://ledge.sh
26•dancablam•18h ago
Hi HN,

Ledge is a Markdown notebook that runs shell commands, code, SQL, etc from inside your own notes.

I built Ledge because I spend much of my day copy/pasting commands from my notes into the terminal. I was inspired by how much cmux helped me organize my terminals - but there was still a split brain between my notes and frequently run commands. I've been daily-driving it for the past few weeks and use it for deploys, API calls, smoke tests, etc.

Ledge runs your real shell just like a terminal app and can be hosted locally or remotely over SSH using ledge-server. I've been building it since July and have recently added support for all the major platforms: Mac (Silicon), Windows (WSL required), Linux, iOS, Android. Mobile devices require SSH access to a ledge-server and Android is still in beta and looking for beta testers (see link on website)!

It's built on Bun and Electrobun and is free and open-source. Feel free to review the code and contribute at https://github.com/ledgesh/ledge

Feedback is very much welcome. Any must-have features that are missing?

Comments

wakaru44•10h ago
Years ago I just used Jupyter notebooks with a bash (or many others) backend to have a similar thing.
dancablam•7h ago
Jupyter is great. From what I recall it's bash kernel isn't a real terminal session so sudo prompts, top, etc can tend to get a bit wonky. I also have a preference towards Markdown over .ipynb.
bpshaver•24m ago
This is all valid, but I'd suggest rethinking the slogan "The notebook that runs code" at the top of the README. I much prefer .md too and haven't used notebooks regularly in years, but nevertheless I scoffed when I read that (I thought: hasn't this guy heard of Jupyter?). I believe you'd be better off not calling this a "notebook" at all since that terms tends to describe something slightly different than what you have here.
dancablam•18m ago
Good feedback. Perhaps "Runnable markdown notes" instead of "The notebook that runs code".
bpshaver•9m ago
In truth I think it was just the use of the definite article that got me. This is a notebook that runs code, not the notebook that runs code. I just think this is cool and it could be better differentiated.
skrtskrt•17m ago
Scoffing and thinking "hasn't this guy heard of Jupyter" says more about your attitude than it does the tool or its README copy.

Hasn't this guy heard of [old product that is a huge pain and no one likes]? Why would he ever make something that suits his own interests and preferences?

bpshaver•13m ago
Yes, exactly. I'm sharing with this creator what my initial knee-jerk reaction was, admittedly exaggerating a bit. In case he'd like to avoid other people having a similar reaction. (And indeed, he thanked me for my feedback.)

It seems like you think that pointing out that I'm sharing my attitude is some sort of gotcha, but I'm confused. Sharing one's attitude is the whole point of posting an internet comment, isn't it?

baranguneysel•8h ago
Very cool! I launched something similar as well. My idea was to create a working document in which people could develop their own tools and agents. Conversations with coding agents are treated as editable, executable documents. Both the person and the agent can write on the same page. Rather than correcting a mistake in a follow-up, you can rewrite it, delete a detour, or edit and re-run an earlier prompt. The file is always readable Markdown. Check out: https://piary.dev/

Feel free to get in touch if you are open to an exchange, you can find my contact details in the write-up.

dancablam•7h ago
Nice! I'll take a look.
rvdca•3h ago
How does this compete to something like Org-mode?
dancablam•2h ago
Good question. Main differences of Ledge: You don't need Emacs for those of us that don't use it already. Markdown instead of Org syntax. Shells are interactive by default. Mobile apps can run the shell/code.
TheGoodBarn•15m ago
This is awesome I will definitely play around with it. Fits the niche gap as a standalone app vs something like [Observable Framework](https://observablehq.github.io/framework/) for data analytical type things.

I wish Notion could just integrate these things together and make it work, or someone build an Obsidian plugin. More often than not it would be so convenient to do something like this.

dancablam•2m ago
Awesome! Let me know how it goes.
tetraodonpuffer•12m ago
cool idea, do you have any plans to integrate command generation with the shell completion / aliases / functions? Say I have tons of muscle memory on using ctrl-r fzf to get things from history, or on pressing tab to autocomplete pod names etc. so I would never write out a full kubectl command to execute by hand
melito•12m ago
Looks cool. I vibe coded this a while back to share some org docs on the web https://orgmode.dev/ - its currently a mess, but it does mostly work.
theCodeStig•9m ago
As an Emacs user for over a decade I think this is brilliant, it solves my biggest gripes with org-babel which prevent me from using it in a team setting. Ledge is a lot like org-babel from Emacs, but for muggles: a familiar UI, and common format go a long way.
dancablam•3m ago
Hey thanks! This gives me the motivation to keep on evolving this project :)