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Ask HN: What are you working on? (September 2025)

44•david927•1h ago
What are you working on? Any new ideas that you're thinking about?

Comments

devenson•1h ago
https://buildfreely.com helping people build a shed or small struture.
inside_story•51m ago
cool
taormina•1h ago
I'm still working on Danger World (https://danger.world), my casual 2D narrative adventure with turn-based RPG elements. Built in Flame, on top of Flutter for iOS, Android, Windows and MacOS.

We're getting close! It's just a matter of polishing and polishing and polishing, but I'm really excited about how close we are to launch.

cryptoz•1h ago
A way for people to build LLM-powered webapps and then easily earn as they are used: I use OpenAI API and charge 2x for tokens so that webapp builders can earn on the margin:

https://codeplusequalsai.com

andoando•1h ago
I got a dumb phone. Been messing around with setting a phone number to call to get SMS directions and things of that sort. Then I wanted to build my own phone so I got a LTE module and been messing around with that.
sentrysapper•58m ago
Working on a "Data Governance in a Box" solution for small businesses that are using out of data routers and security practices. Starting here in Canada, but open to collaboration.
vc5•58m ago
An XDP/eBPF load balancer with Golang control plane library and an application to replace high capacity legacy appliances with COTS servers.
cjflog•57m ago
Currently a one-man side project:

https://laboratory.love

Last year PlasticList discovered that 86% of food products they tested contain plastic chemicals—including 100% of baby food tested. The EU just lowered their "safe" BPA limit by 20,000x. Meanwhile, the FDA allows levels 100x higher than what Europe considers safe.

This seemed like a solvable problem.

Laboratory.love lets you crowdfund independent testing of specific products you actually buy. Think Consumer Reports meets Kickstarter, but focused on detecting endocrine disruptors in your yogurt, your kid's snacks, whatever you're curious about.

Here's how it works: Find a product (or suggest one), contribute to its testing fund, get detailed lab results when testing completes. If a product doesn't reach its funding goal within 365 days, automatic refund. All results are published openly. Laboratory.love uses the same methodology as PlasticList.org, which found plastic chemicals in everything from prenatal vitamins to ice cream. But instead of researchers choosing what to test, you do.

The bigger picture: Companies respond to market pressure. Transparency creates that pressure. When consumers have data, supply chains get cleaner.

Technical details: Laboratory.love works with ISO 17025-accredited labs, test three samples from different production lots, detect chemicals down to parts per billion. The testing protocol is public.

So far a couple dozen products have received some funding, six products have been fully funded (five product results published, the sixth is at the lab as I write this!)

You can browse products, add your own, or just follow specific items you're curious about: https://laboratory.love

JaggerJo•55m ago
Cool project!
oidar•51m ago
Looking at the tofu reports, I really don't know what to make of them. Is there a way to give more meaning to them for the average person? Also, I'd love to see a sort by "almost funded" option.
temeya•57m ago
Mostly organizing my dotfiles across Windows, macOS, Linux and BSD, however, I have really fallen for Ansible. I discovered at work awhile back, but was able to grok how to make and run a playbook, and I've been hooked since. It also finally allowed me to click the difference between Imperative and Declarative programming!
verdverm•20m ago
Careful, not all ansible is declarative or idempotent. Lots of foot guns exist, still a valuable tool
yeutterg•56m ago
Working on the Restful Atmos Sleep Lamp, a smart bedside lamp that automatically shifts throughout the day and night for the circadian rhythm, reducing blue light at night and maximizing blue light during the day. There is a machine learning layer that learns your preferences and automatically adjusts the intensity of the light, similarly to the Nest Thermostat [0].

Also, shipping Bedtime Bulb v2 next month. This is a hybrid LED-incandescent design meant for the evening that is the best of both worlds: low blue light, high color quality, perfect compatibility with dimmers, 10x less flicker than incandescent, includes near infrared, low energy use, long lifespan [1].

[0]: https://restfullighting.com/products/restful-atmos-preorder

[1]: https://restfullighting.com/products/bedtime-bulb-v2-preorde...

bisonbear•56m ago
I'm working on character.ai for learning Chinese, you chat with characters at your level, and get instant feedback on your writing. It's a way to get a wide amount of comprehensible input in an engaging way that also practices output.

https://koucai.chat

incognito124•55m ago
I'm working on a concept for movies in VR. 3D movies where you choose a story you want to watch. Examples being

- imagine a war scene and you can pick the side you're watching. There can be plenty more story lines than just two sides, e.g. a friendship arc of two soldiers, or a civilian getting their house destroyed, or just a crow on a field watching from distance - riding a train and every section is its own story, and they're all somehow connected. for instance there's a huge fire in the middle of the train. You can rewatch the 3d movie and focus every time on a different section. That way you get a complete story.

Just a seed of an idea, still polishing it

ruuda•55m ago
Adding unpack/spread syntax to https://rcl-lang.org/.
jeswin•55m ago
1. A port of linq-to-sql for Typescript (https://github.com/webpods-org/tinqer) allowing queries like:

  const activeAdults = from<User>("users")
    .where((u) => u.age >= 18)
    .where((u) => u.active === true);
It mostly works.

It'll go into webpods (https://github.com/webpods-org/webpods), which is like firebase but with hash chains underneath.

ramoz•55m ago
Deterministic guarantees, and corrective behavioral monitoring for ai agents (starting with claude code, and ADK). Think security + performance bumper rails. At the cost of 0 context.

I was the feature requestor for Claude Code Hooks - and have been involved in ai governance for quite awhile, this is an idea I'm excited about.

Ping below if you want to early beta test. everything is open source, no signups.

omani•54m ago
A wifi-enabled high precision load cell for industrial environments.
dwrodri•54m ago
trying to build a webapp where i apply some recommender systems knowledge to TCG deckbuilding. MtG in particular is suffering from product fatigue and as someone who is both an MLE and a casual MtG player, it has been a fun challenge to apply my skills to a domain of interest
krypdoh•53m ago
Scrolling Stock Price "LED" Ticker for Windows. I could never find one that did what I wanted so with the help of Copilot I built my own. Still has some bugs I am working on but I would love some feedback!

https://github.com/krypdoh/TCKR

CuriouslyC•53m ago
I'm trying to get my agentic software specification tool Arbiter to release (UI polish/debugging is so slow :/, browser shenanigans are harder than Rust fr). It's basically a tool that AI agents can use to construct a project specification. The twist to Arbiter is that the specs are structured and validated, and you can compile them to get:

Services with stubbed endpoints, UIs with placeholder components, Dockerfiles/Terraform/K8s infra, E2E tests (via declared flows), Github/Gitlab epics/issues/subissues

It's also got github/gitlab webhook integration, so you can do stuff like trigger agents reactively when events occur on a repo, it includes cloudflare tunnel support so you can set up webhooks even in a local dev environment, and the project generator is fully customizable.

fabmilo•24m ago
How does it work? is just a documentation specification like spec kit?
tomatohs•52m ago
Computer-use agent for testing: https://testdriver.ai
jezze•52m ago
A command-line tool called berk that is a versatile job dispatcher written in c. It is meant to replace big clunky tools like Jenkins, Ansible etc. It has syntax similar to git. It works pretty well, just need to iron out some kinks before final release. https://github.com/jezze/berk
elicash•52m ago
Working on a chess / poker hybrid.

There was "choker" back in the day, which I actually never heard about since I wasn't into chess back then. But (1) there was no web version, and (2) it had a specific gameplay that seems too slow for my taste. My version is highly customizable on the setup/rounds/rules, too. From my research, the original was also overrun by bots.

janalsncm•30m ago
Looking up choker online I found this reddit thread:

> It’s a cool concept, but terrible app design and it’s all just bots you connect with, making it terribly easy to win almost every game

It sounds like this game needs a better AI opponent then? I don’t know anything about this game but something that learned from your gameplay and figured out how to beat you would be very cool.

sandeepkd•50m ago
Trying to build a secure, configurable and easy to use authentication system (relative to my understanding)

I have experienced knowledge gaps and blind spots that I am attempting to fix. For example most users worry about security of hashed passwords and yet they do not realize that the TOTP (eg Google Authenticator) use symmetric encryption and quite a lot of the authentication providers store the private key in plain text in their database. List goes on...

growingkittens•50m ago
Writing a specification for a personal library app in the hopes I can get AppSheet + Gemini to make one for me. I'm working on library science in general, so it will hopefully implement ideas I have about book classification and entity catalogs.
huevosabio•47m ago
We're building a monster trainer where you can actually teach your monster moves. Think like Pokémon the anime, but for real: https://youtu.be/ThOCM9TK_yo?feature=shared

Behind the scenes, we're doing real time code gen to power the monsters!

Would love feedback!

Keyframe•22m ago
ok this is really cool. do you do procedural animations as well or it's still animated library of moves you blend?
huevosabio•4m ago
No procedural animations yet, but soon we want to get there. We also want to do procedural VFX. There is a lot of meat in there!
pempem•1m ago
OOh I have a great connect for VFX if you need a sound engineer
mindcrime•47m ago
Continuing to do a lot of historical review of early AI stuff. Just finished the Semantic Information Processing[1] book edited by Marvin Minsky, and now I'm reading Volume 1 of the Parallel Distributed Processing[2 book by Rumelhart and McClelland. After that, I have Principles of Semantic Networks[3] by John F. Sowa queued up.

Along with all of that, still working on a lot of stuff using Jason[4] / AgentSpeak[5]. I created a fork[6] of Jason that is meant to be easier to integrate with Spring Boot, and to take more of a "run headless on a server" approach, which meant taking out references to a Swing based in-process logging/management tool. In place of that, I'm implementing a JMX based management interface, and recently I've started to work on replacing the old Swing app with a JavaFX app that can connect using JMX Remoting.

[1]: https://www.amazon.com/Semantic-Information-Processing-Marvi...

[2]: https://www.amazon.com/Parallel-Distributed-Processing-Vol-F...

[3]: https://www.amazon.com/Principles-Semantic-Networks-Explorat...

[4]: https://github.com/jason-lang/jason

[5]: https://en.wikipedia.org/wiki/AgentSpeak

[6]: https://github.com/mindcrime/jasonfg/

thekaranchawla•34m ago
I love this! If you want to do a short book club or do a review after each book, I'm very down!
inside_story•46m ago
Building https://pneumatter.com to explore embodying articles of Programmable Architecture (self-assembling buildings)which are weather-compliant, resource generating, and optionally permanent.
hakanshehu•46m ago
I’m working on Colanode, which is built to close the gap between the convenience of cloud tools and the ownership of local software. It brings chat, docs, databases, and files into one open-source, self-hostable workspace where data lives on your devices first and syncs in the background. Unlike typical SaaS tools, Colanode is local-first: everything works instantly and offline, infrastructure stays minimal, and you keep full control of your data.

Website: https://colanode.com Repo: https://github.com/colanode/colanode

arondeparon•43m ago
Working on real-time log visualization platform with wallboard/tv support, initially inspired by Logstalgia:

https://tailstream.io

Launched the initial version a couple of weeks ago and making good progress, trying to share as much of the process as I can on X.

Backend API can be used by any client, but I also built an open source agent in Go that makes setup really easy.

Currently working on a proper log viewer, alerts and visualization improvements.

MASNeo•33m ago
Please show this to AWS. CloudWatch is such a pain, arcade visuals is what I want, if I have to look at logs.
cookiengineer•43m ago
I am working on my Go UI library called gooey [1] which aims to be a one stop framework to build webview/webview apps in Go and WebASM.

It started out with bindings for the DOM, Web, and Browser APIs, but as of today I now have custom Web Components support (which is a big deal considering Go's type system quirks).

Tomorrow I'm gonna polish some of the UI components and start refactoring my git-evac [2] repo management tool which is the first app using the gooey framework.

[1] https://github.com/cookiengineer/gooey

[2] https://github.com/cookiengineer/git-evac

maccard•41m ago
That’s a great name.
excitedrustle•17m ago
Looks great! Wish Go wasm modules were smaller.
cookiengineer•5m ago
The bindings should also work with tinygo's compiler if you're careful with deadlocks (see docs/ERRATA.md).

Haven't tested the typecasting that's required for the components yet though, they might break because of some generics quirks (e.g. Wrap/Unwrap helper methods).

rspoerri•42m ago
creating a kanban editor for vscode that can integrate images, videos etc. i use it for planning and creating lectures over several weeks. it can export to a marp compatible presentation format. it's coded with claude, because i would not have had the time to do it othervise.

https://github.com/ludos1978/markdown-kanban-obsidian

thedeep_mind•41m ago
I am working on PicPickr.

It is a desktop app built with Electron and React. I built to help newlywed couples to quickly sort thousands of wedding photos with a Tinder style swipe UI. It is offline first, fully private, and offers one click export of your selected pictures.

I started building it earlier this year after going through my own wedding photo experience and realizing how overwhelming it can be. I saw my wife dragging and dropping photos from one folder to other and thought there has to be a better way for non-photographer folks.

Right now, I have a working prototype, a landing page live, and I am testing distribution and feedback from early users.

https://picpickr.com

thekonqueror•40m ago
I'm working on a WordPress PaaS with dedicated lanes for bots. The status quo around WordPress is that you block bots using Cloudflare, else your site crashes. Since AI search is here to stay, we need a way to let bots crawl WordPress sites without crashing the server.

Currently at MVP stage, no domain yet.

GMoromisato•40m ago
Still working on https://gridwhale.com.

This is mostly a nostalgia play--I'm pining for a time when app development was much easier. I'm trying to apply lessons from early Rapid Application Development while still providing a full-featured language.

I confess that I haven't gotten any traction at all, but I find it incredibly useful for my own consulting business, so I'm going to keep on working on it.

stuckinaloop•40m ago
definitely WIP but my and my brother are working on sourcing and selling microplastic free athletic wear. Shopify is super wip https://tryfibre.com/
MASNeo•39m ago
Fighting financial crime with federated learning: https://github.com/SoteriaInitiative/flstandards

Non-Profit to make cross-entity financial crime detection a reality using AI and establishing adequate data standards.

Volunteers welcome (-;

sctb•39m ago
A Sanskrit transliteration (IAST) editing mode for Emacs, including a dictionary and Devanāgarī rendering: https://github.com/sctb/sanskrit.
alexakten•38m ago
https://www.autogram.id/

A place to build your corner of the internet.

Minimalistic site builder for portfolio, blog, or just link in bio to showcase your projects and ideas.

here’s mine: https://www.autogram.id/alex

rozenmd•38m ago
I'm rebuilding OnlineOrNot's frontend to be powered by the public REST API. Doing this both as a means of dogfooding, and adding features to the REST API, that I easily dumped into the private GraphQL API without thinking too hard.

Basically I've realised GraphQL has taken me as far as it can, and I should've gone with REST to start with. That, and after I finish the first milestone (uptime checks + cron job monitors), I'll be able to start building a proper terraform provider, and audit logs.

https://onlineornot.com/, since early 2021.

rguldener•34m ago
Open source tools for engineers to build integrations in their products: https://nango.dev
r4ge•33m ago
Testing jig for a traction control system for a locomotive. Microcontroller connected to a DDS waveform generator simulates the sensor that picks wheel speed, various ADCs and DACs read in analog voltages that are compared to determine loss of traction. 1980s analog computing at its finest. If I had a choice I would be doing anything else ;)
brainless•33m ago
AI coding for entire business teams, no tech knowledge needed.

https://github.com/brainless/nocodo

Self-hosted, multiple models, bring your own keys and subscriptions, unlimited projects, tasks, web based, runs on your cloud server.

genkoph•33m ago
I built an alternative to the Typescript package "neverthrow" called "no-exceptions"

I found neverthrow's api to be not very ergonomic so I built my own little version.

https://www.npmjs.com/package/no-exceptions

epolanski•1m ago
Serious question, not dismissing any of your work but why implement it yourself when there's plenty of such implementations in TS land already.

fp-ts has an Either type e.g. but there's plenty of such libraries.

https://gcanti.github.io/fp-ts/modules/Either.ts.html

coffeecoders•31m ago
Nothing extraordinary like yall.

I've been down a prime numbers rabbit hole. Trying to see the largest prime I can generate in a browser.

dr_traktor•30m ago
I’m writing a Python framework to create Python home automation scripts driving Zigbee2MQTT with as little boilerplate as possible. https://pyziggy.github.io
sylvainkalache•30m ago
A burnout detector for SREs. The goal is to help teams identify incident responders who may be overworked/getting burned out.

We are looking at:

-Objective data: signals from incident management tools (Rootly/PagerDuty), GitHub, and Slack

-Self-reported data: asking the engineers how they feel via short survey

From this, we generate a CBI score (Copenhagen Burnout Inventory). We're still in beta, but we've received positive feedback from our beta testers, especially from manager of large and distributed orgs.

It's fully open-source, you can test it out locally https://github.com/Rootly-AI-Labs/rootly-burnout-detector-we...

Alternatively, we offer a hosted version with mock data, allowing you to play with it. https://www.oncallburnout.com/

If you have any feedback or ideas, shoot them my way :)

tiberius_p•30m ago
An HDL simulator written in Common Lisp.
thip•29m ago
I've been making and selling my electronic social battery pin badges for a while now (https://hortus.dev/products/social-battery) and I'm expanding the range with seasonal versions like a Christmas mood badge, and a halloween themed ghost badge that's coming soon. I'm lucky enough that these projects have gone down well and are making enough money to fund some more complicated (and expensive) projects that I wouldn't have otherwise had the guts to try. Currently I'm working on an RGB digital sand timer with customizable timing sequences so that you can use it for things like the pomodoro technique - I have a working prototype and at the moment I'm experimenting with interfaces for setting the sequences. I wanted to use a combination of buttons and an accelerometer for this but it's not as intuitive as I'd like so I may end up making a small smartphone app to configure it.
dbish•29m ago
On the side, custom coloring books for kids using nano banana, started with a project for my son, and its a little janky for some photos but have had some interest already: https://bespokebooks.io. I think it needs to be a phone app to really work for most people though, so that's next on my to do list besides some prompt tweaking.

Notebook to do it yourself here: https://github.com/dbish/bespoke-books-ai-example

I think there are a lot of really fun projects possible now in the child book creation space, particularly as you build tools that they can use themselves (like adding voice interfaces to building a book or story).

This is outside my 996 job of AI Agent/Assistant infra + ops :)

milani•28m ago
Often, when I use generative AI to produce videos, the results are close to what I envision but rarely capture my imagination exactly. Prompting the AI to fix specific details can be a cumbersome and time-consuming process. To address this, I'm developing solutions that make the creative workflow more intuitive. So far, I’ve built an app that allows users to provide visual clues as guides, along with a 3D environment where the camera can be freely manipulated within the generated scene.

The community is moving fast though. Now higgsfield allows using arrows and pointers to edit the video but so far, no one is doing a good camera control visually.

hewwwww•28m ago
In my free time I’m still working on My Financé (I keep getting feedback this name is confusing), which is a fairly undifferentiated personal finance tool.

It’s a labor of love, but I love it!

I’m currently building a simulation engine that lets you forecast your spending, build scenarios (like taking a year off, getting a cat, move to a new city, etc based on your current spending patterns and assets.

https://myfinancereport.com/

It’s great fun to have a project of one’s own to just toil away on.

sfpotter•24m ago
I don't know what it is about this name, but I read it as "My Fiancé". My brain did not register the first "n" and it wasn't until I read your parenthetical remark that I went back and re-read.

The name isn't confusing, per se ("get married to/be exclusive with your finances", OK), but it also isn't very strong... "financé" is also very strange and awkward to pronounce as a native English speaker. Probably because it comes across more as Spanish-seeming despite it being a play on a French work.

verdverm•14m ago
> I don't know what it is about this name, but I read it as...

same misreading

I'm blaming typoglycemia

verdverm•26m ago
Permissioned Spaces (private data) for ATProtocol

https://github.com/blebbit/atproto

https://youtu.be/oYKA85oZc8U?si=DIf09hu8-REw-yHj&t=3758

excitedrustle•25m ago
Working on Fraim, open-source agents for cloudsec and appsec engineers to complement existing deterministic scanners. Born out of our 3 years of learnings building such scanners for IaC. Turns out in the real world policies are subjective enough to make this hard.

Examples:

- Policies are frequently subjective. Hard to codify, but LLMs can evaluate them more like a security engineer would. "IAM policies should use least privilege." What is "least" enough? "Admin ports shouldn't be exposed to the Internet." What's an admin port?

- Security engineers are stretched thin. LLMs can watch PRs for potentially risky changes that need closer human review. "PR loosens auth/authn." "PR changes network perimeter configuration."

- Traditional check runs (SAST, IaC, etc.) flood PRs with findings. Security doesn't have time to review them all. Devs tends to ignore them. Frequent false positives. LLMs can draw attention to the important ones. "If the findings are unusual for this repo, require the author to acknowledge the risk before merging."

https://github.com/fraim-dev/fraim

https://www.fraim.dev

epolanski•8m ago
Super interesting!
cperciva•24m ago
Release engineering for FreeBSD 15.0-RELEASE. Major releases are always a lot of work, but this is probably the biggest release in 20 years due to the new base system distribution system landing. (We're switching from "here's a tarball containing everything" to "here's 500 packages", with resulting changes in the build process, download/update mirrors, installer, etc.)
jesse__•24m ago
I've been working on a 3D voxel-based game engine for like 10 years in my spare time. The most recent big job has been to port the world gen and editor to the GPU, which has had some pretty cute knock-on effects. The most interesting is you can hot-reload the world gen shaders and out pop your changes on the screen, like a voxel version of shadertoy.

https://github.com/scallyw4g/bonsai

I also wrote a metaprogramming language which generates a lot of the editor UI for the engine. It's a bespoke C parser that supports a small subset of C++, which is exposed to the user through a 'scripting-like' language you embed directly in your source files. I wrote it as a replacement for C++ templates and in my completely unbiased opinion it is WAY better.

https://github.com/scallyw4g/poof

nicbou•24m ago
I have made a Bürgeramt appointment finder. It was down for a few weeks after the city of Berlin changed its anti-bot measures. I just released an updated version that works again: https://allaboutberlin.com/tools/appointment-finder

My citizenship wait times page (https://allaboutberlin.com/guides/citizenship-wait-times) has also gotten enough feedback to be useful since its release last month. I'd like to make it more useful with better visualisations.

Now I'm working on another iteration of my health insurance calculator (https://allaboutberlin.com/tools/health-insurance-calculator). It's kind of a big deal both because it's a huge financial decision for recent immigrants, and because it funds a big chunk of all the free stuff I'm putting out. This is especially important with ChatGPT and AI summaries halving my traffic. This iteration will recommend health insurance combinations that work for a visa application and for a long-term stay in Germany. It will provide far better explanations.

At the same time, I'm testing a new insurance broker with far shorter response times, so people can directly ask an expert to help them choose. They're reachable via Whatsapp, and that made a huge difference in how people get advice. It worked so well that I want to do the same for other topics. I'm already talking with an immigration lawyer who's interested.

Linjmeyer•22m ago
Continuing to build https://crucialexams.com/, a platform that helps people prepare for IT certifications like CompTIA, AWS, and Microsoft/Azure. It offers realistic practice tests and study tools. I also have partnered with educators and universities who now offer it to their students and get dashboards to review student progress and identify where they are struggling.
Aperocky•21m ago
I am working on a tiny cli project, tascli: https://github.com/Aperocky/tascli, a local fast and simple personal task and record manager. Specifically, I need to update it to support recurring task and records.
tpae•20m ago
I'm working on Osaurus - https://github.com/dinoki-ai/osaurus, native, Apple Silicon–only local LLM server. Open Source + MIT-License
elpakal•20m ago
Adding a chat feature to my iOS app size analysis tool that runs locally on your Mac. My goal is to make everyone a build engineer, where you can chat with your builds and get insights and improvement areas. Testing out on-device Apple Intelligence models but need to find the time to do more validation testing.

https://apps.apple.com/us/app/dotipa/id6742254881

sirbraavos•19m ago
Demofy iOS App Mockup & Demo Generator

https://www.demofyapp.com/

jeena•16m ago
A script which will find random pictures of anyone in the family from the Immich database, resize them and add metadata on them like where they were taken and when and put them on the TV to show as kind of a screen saver when we're at home.

I like this Facebook feature which shows you "Today 10 years ago", Immich, does have it in it's UI too and perhaps I will mix in those pictures also to show on TV.

stevepotter•16m ago
I'm working on a system that helps surgeons make precise bone cuts during knee replacement surgery. Believe it or not, manual cuts are still the standard in that type of procedure. Robotic systems exist but they are very costly, big, and actually add time to the surgery (bad news when you are under anesthesia and your leg is in a tourniquet).

It uses 4k stereoscopic capture and bunch of ML models to match bone position with sub-millimeter precision. The surgeon screws a metal base piece into the bone, and we detect where that is in space. Then, a Stewart Platform adjusts another part that is placed onto the base. The robotic adjustment allows the base to be placed in a ballpark area, with the robotically-adjusted piece oriented in the exact spot where the surgeon needs to cut.

The net result is a robotic system that is many times cheaper than the least expensive incumbent, decreases surgery time significantly, reduces error, and basically "just works" as opposed to requiring a ton of training. We are debuting at a tradeshow in October.

craig227•15m ago
Built Chronoodle (daily history game) last year. Recently launched Playlin:

https://playlin.io

to help connect players with daily web games after seeing how hard discovery was.

dmitri1981•14m ago
A TypeScript code generation framework that lets you create UIs and does not use ASTs

- https://github.com/skmtc/skmtc

- https://skm.tc

jamesponddotco•14m ago
I’m working on an ISBN database that fetches information from several other services, such as Hardcover.app, Google Books, and ISBNDB, merges that information, and return something more complete than using them alone. It also saves that information in the database for future lookups.

Mostly because I’m working on a personal library management service called Shelvica to solve my own problems[1], and none of those services provided all the information on a book. One might provide the series, the other might provide genres, and yet another might provide a cover with good dimensions, but none provided everything, so I decided to work on something of my own (called Librario).

While Shelvica is the focus, Librario could become its own thing in time, so I don’t mind the sidetracking.

I also plan on having a “ISBN Search” kind of website that feeds from that database as a way to let users search for information about books, which then feeds the service’s database, making it stronger for Shelvica.

I open source everything I make, but I’m still wondering if these will be open sourced or not. I’ll probably go with the EUPL 1.2 license if I do decide on open sourcing them.

[1]: My wife and I have a personal library with around 1800 books, but most applications for management are either focused on ebooks or choke with this many books. Libib is the exception, but I wanted a little more.

ravenical•1m ago
Interesting! Have you looked into data from Anna (https://annas-archive.li/blog/all-isbns-winners.html)?
oulipo2•13m ago
We're building a repairable and sustainable e-bike battery at https://gouach.com :)
kilroy123•13m ago
I started a newsletter that tries to recreate the original magic of stumble upon. To feature cool random stuff from across the internet.

I believe the old internet is still alive and well. It's just buried under a mountain of shit.

https://randomdailyurls.com/

gmac•12m ago
Adding QUIC/http3 to https://bytebybyte.dev/.
LoulouMonkey•12m ago
Adding some new features to my static site generator: https://github.com/julien-blanchard/Loulou

Glad I ditched Hugo a few months ago.

pcardoso•12m ago
Two side projects, as if 3 kids are not enough!

- a booking platform for surfing schools - a tool for pelvic physiotherapy practitioners handle appointments and exercise prescriptions

Doing backend and frontend for both, but there is a small team helping with #2. Both come from actual needs of actual businesses.

Tech is pretty standard typescript, react and node.

Would love to be working on these full time.

paulhebert•9m ago
I’m building a daily word puzzle game with a twist!

In Tiled Words you rearrange tiles to solve clues and rebuild a broken crossword.

You can play a demo at https://tiledwords.com - it’s free and web based so it works on whatever device you’ve got.

I’ll be officially launching on October 19th at the Portland Retro Gaming Expo. You can sign up to be notified on launch. Starting then there will be a new puzzle every day!

So far I’ve gotten really positive feedback and have around 100 people signed up to get notified. It’s been a lot of fun to build!

wowohwow•8m ago
Going solo on

https://meldsecurity.com/

I'm putting a bunch of security tools / data feeds together as a service. The goal is to help teams and individuals run scans/analysis/security project management for "freemium" (certain number of scans/projects for free each month, haven't locked in on how it'll pan out fully $$ wise).

I want to help lower the technical hurdles to running and maintaining security tools for teams and individuals. There are a ton of great open source tools out there, most people either don't know or don't have the time to do a technical deep dive into each. So I'm adding utilities and tools by the day to the platform.

Likewise, there's a built in expert platform for you to get help on your security problems built into the system. (Currently an expert team consisting of [me]). Longer term, I'm working on some AI plugins to help alert on CVEs custom to you, generate automated scans, and some other fun stuff.

https://meldsecurity.com/ycombinator (if you're interested in free credits)

bradly•8m ago
I made my pops a walnut multi-guitar stand a couple months ago and I’d like to get some nice pics done and make one of those eCommerce web site things to sell them. Here's a bad pic https://bradlyfeeley.com/onokura.jpg
jacquesm•7m ago
I finally collected the courage to release my operating system into the wild:

https://news.ycombinator.com/item?id=45400006

I'm super curious if anybody will pick it up and do something useful with it. This was a couple of years of my life and I absolutely loved working on it but having a child put a hard stop to such entertainment for many years. Now, a good 30 years later I finally found the time to resurrect it.

I'm not sure yet if I am going to do more work on it or leave it as it is, it's good enough to give someone new to OS development a running start and a foundation to build on.

aleda145•7m ago
I'm building Kavla, its an infinite multiplayer canvas for data analytics.

I have a video on how it works on https://kavla.dev/

And a live demo here: https://demo.kavla.dev/

I've been working in the data space for five years now. Kavla is something that I personally feel would make my job more fun!

Built with tldraw and duckdb

keyserj•6m ago
Working on a webapp for critically think with others about a problem.

The idea is that you build a diagram that contains all the details about the problem and people's thoughts on it, and it's organized in such a way that it's easy to just keep refining, down to the smallest detail. So you build this concrete, shared understanding, and move it forward and forward, until hopefully y'all can make some best decision to improve the situation.

There's a lot to do. Currently working on UX to allow hiding intermediate nodes and still have indirect edges drawn. Want to add an LLM integration to generate/update diagrams via natural language, which I think will help a lot with usage barriers to using the app.

Happy to get any feedback :) https://ameliorate.app/ https://github.com/amelioro/ameliorate

dmkii•6m ago
Most of our jobs consist of working with tools. Yet it’s very hard to get insights into which tools are required most, are growing in your area, etc. So I decided to keep track of tools and technologies mentioned in the data space by keeping track of job openings for the last two years. Now I’ve opened up that data set. Here’s an analysis for jobs per data warehouse: https://selectfrom.work/insights/data_warehouses
stuartaxelowen•4m ago
I'm working on a partition-oriented declarative data build system. The inspiration comes from working with systems like Airflow and AWS step functions, where data orchestration is described explicitly, and the dependency relationships between input and produced data partitions is complex. Put simply, writing orchestration code for this case sucks - the goal of the project is to enable whole data platforms to be made up of jobs that declare their input and output partition deps, so that they can be automatically fulfilled, enabling kubernetes-like continuous reconciliation of desired partitions.

This means, instead of the answer to "how do we produce this output data" being "trigger and pray everything upstream is still working", we can answer with "the system was asked to produce this output data partition and its dependencies were automatically built for it". My hope is that this allows the interface with the system to instead be continuously telling it what partitions we want to exist, and letting it figure out the rest, instead of the byzantine DAGs that get built in airflow/etc.

This comes out of a big feeling that even more recent orchestrators like Prefect, Dagster, etc are still solving the wrong problem, and not internalizing the right complexity.

abnercoimbre•2m ago
Full-time indie dev breathing life into next-gen terminals [0]. This is my lifelong career ambition.

If you can't afford early access, please email me and I'll grant you a free copy: I need all the feedback I can get!

[0] https://terminal.cllick

ml-•2m ago
Still working on cataloging a curated list of craft beer venues across the world at https://wheretodrink.beer

Unsure what the plan is going forward with it, apart from adding more venues and more countries. As long as it's fun for me I'll just keep adding things.

Next addition will be to add health inspection data from countries that have that in open datasets or APIs, so if anyone know of that I'd be appreciative of hints (know of UK, Norway and might have found for France).

AI Smart Glasses Promise Workplace Wonders, Compliance Risks

https://news.bloomberglaw.com/artificial-intelligence/ai-smart-glasses-promise-workplace-wonders-...
1•hogwash•3m ago•0 comments

Technology Without Humanity Means Nothing

https://moneo.com.tr/blog/technology-without-humanity-means-nothing
1•emir•4m ago•0 comments

An open hardware printer you can understand, repair, and upgrade

https://www.crowdsupply.com/open-tools/open-printer
2•CharlesW•5m ago•0 comments

Cursor Can Control the Browser

https://twitter.com/cursor_ai/status/1972778817854067188
1•ecz•5m ago•0 comments

What Is Zero Trust Security? A Simple Guide for Businesses

https://polygraf.ai/what-is-zero-trust-security-a-simple-guide-for-businesses/
2•sarvarjafarov•7m ago•1 comments

Tile Tracking Tags Can Be Exploited

https://www.wired.com/story/tile-tracking-tags-can-be-exploited-by-tech-savvy-stalkers-researcher...
1•mspecter•10m ago•0 comments

The Game Engine that would not have been made without Rust

https://blog.vermeilsoft.com/2025-09-rust-game-engine/
2•zdw•13m ago•0 comments

Beneath the GDP, a Recession Warning

https://www.wsj.com/opinion/beneath-the-gdp-a-recession-warning-fff133de
1•paulpauper•17m ago•0 comments

Bans on highly toxic pesticides could save lives from suicide

https://ourworldindata.org/pesticide-bans-suicide-prevention
1•kamaraju•17m ago•0 comments

Million-year-old skull rewrites human evolution, scientists claim

https://www.bbc.com/news/articles/cdx01ve5151o
1•paulpauper•18m ago•0 comments

Essential books for modern technology leaders

https://www.hyperact.co.uk/blog/10-essential-books-for-modern-tech-leaders
2•imjacobclark•21m ago•0 comments

YouTube settles lawsuit challenging Section 230 for $25.4M

https://www.courtlistener.com/docket/60643878/178/trump-v-youtube-llc/
3•1vuio0pswjnm7•23m ago•1 comments

Landlords Demand Tenants' Workplace Logins to Scrape Their Paystubs

https://www.404media.co/landlords-demand-tenants-workplace-logins-to-scrape-their-paystubs/
4•throwaway81523•24m ago•0 comments

Can LIGO Detect Daylight Savings Time?

https://arxiv.org/abs/2509.11849
4•zdw•25m ago•0 comments

People World Lose and H

https://www.facebook.com/hidalberto.caratini.santiago.2025
1•gelatonevado•26m ago•0 comments

Afghanistan in total Internet blackout caused by Taliban

https://mastodon.social/@netblocks/115288230006300457
1•walrus01•27m ago•1 comments

Epigenetics

https://en.wikipedia.org/wiki/Epigenetics
1•nis0s•28m ago•0 comments

Welcome to the Internet (2021) [video]

https://www.youtube.com/watch?v=k1BneeJTDcU
1•andrepd•29m ago•0 comments

Macintosh System 7 Ported To x86 With LLM Help in 3 days

https://github.com/Kelsidavis/System7
4•zdw•29m ago•0 comments

AI Photography Is the Next Big Thing in Digital Imaging

https://techglimmer.io/what-is-ai-photography-and-digital-imaging/
2•kaus_meister•33m ago•2 comments

I Tried Htmx

https://bytecron.me/post/i-tried-htmx
2•srid•33m ago•2 comments

A growing number of U.S. adults report cognitive disability

https://news.yale.edu/2025/09/24/growing-number-us-adults-report-cognitive-disability
3•thinkalone•34m ago•0 comments

Generate Swift code programmatically with declarative syntax

https://github.com/brightdigit/SyntaxKit
1•rmason•35m ago•0 comments

Ask HN: Tomorrow is my first hackathon, any advice?

2•ofou•40m ago•3 comments

Riemannian Geometry and Non-Euclidean Geometry

https://www.preposterousuniverse.com/blog/2015/11/26/thanksgiving-10/
1•programmexxx•41m ago•0 comments

Partijgedrag – A Dutch political voting compass built on public data

https://github.com/van-sprundel/partijgedrag
1•ramon156•43m ago•0 comments

Show HN: Clean metrics for messy coding habits

https://timefly.dev
1•cgonzar3•44m ago•5 comments

Google to merge Android and ChromeOS in 2026

https://www.theregister.com/2025/09/25/google_android_chromeos/
6•fork-bomber•46m ago•0 comments

Does Agentic AI imply output goes to infinity?

https://substack.com/inbox/post/174849090
1•mathattack•47m ago•0 comments

Amygdala–liver signalling orchestrates glycaemic responses to stress

https://www.nature.com/articles/s41586-025-09420-1
2•PaulHoule•48m ago•0 comments