Ask HN: What are you working on? (June 2026)
Source: Hacker News
A tide flag. As in, a mechanical device that turns a weather-vane-like flag that moves with the ebb and flow. It has to be powered by the tide, and must be able to withstand the elements. And, must look cool.
Then, I will slap an ESP32 & z-wave on it :D secretly to feed my Home Assistant. :D
I’m maintaining a public dashboard that monitors the occupancy of public parking garages in my city (https://www.parkeergaragesdelft.nl). Last year the city council requested this information from the municipality but it’s still not delivered. I just finished a redesign that includes references to the relevant city council discussions that aren’t settled due to missing data.
Another project is https://www.beeldplek.nl, a timelapse platform powered by community photos. The idea is to place a mount and QR code at fixed viewpoints around the neighbourhood. People scan, photograph the view, optionally add their name, and submit. The infrastructure is up and running but getting the permit to place the mount has been a slow process so far.
I’m working on Hiring Method (https://hiring-method.com).
After 1.5 years of development and two exhausting pivots, I’m incredibly happy to finally have our v1 live!
While most of the HR tech is rushing to use black-box AI, I built the exact opposite. It’s a transparent, math-driven fitness engine. It extracts objective data from CVs and calculates how well applicants match requirements, letting you see the reasoning behind why someone scored an X%.
If anyone here builds in the HR space or regularly hires engineers, I would absolutely love your feedback or a roast of the landing page.
PS This is a project of immense importance for me, I’ve been working on for past ~2 years, I’d appreciate to know why this comment is flagged.
flags or downvotes probably come from people being skeptical about automated CV evaluation. in europe this is also legally questionable.
also matching requirements should be secondary to experience. someone who has done a few react websites will not be as qualified for your react job as someone that has done 10 years of angular and vue and can learn react in a short time.
I’m working on a semantic layer for Nextcloud, composed of a Nextcloud app (Astrolabe) and backend (nextcloud-mcp-server). I use the service as an MCP server across a number of apps, and others use it primarily for semantic search over large numbers of documents.
Both are open source, and I’m working on a managed offering, completely based in the EU, for individuals/teams that already use Nextcloud and want to be able to use semantic search across some or all of their documents.
It currently supports:
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notes
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deck cards
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files
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news items (RSS feeds)
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cookbook recipes
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contacts & calendar
And I’m adding support for other apps as I go.
Currently in early beta for anyone interested: https//astrolabecloud.com
Still plugging away at Breaka Club, where kids take photos of their hand drawn art and build games using it. Starts out as no-code, photograph an AprilTag and it imbues the image with functionality.
https://breaka.club/blog/why-were-building-clubs-for-kids
We also teach kids visual scripting in Overcooked 2!, allowing kids to code their way through the levels of an existing much beloved game:
I’m running an in school pilot this week (Lunch time school club).
The tech stack for the main product is honestly pretty intense at this point with full multiplayer support, offline play, transitioning from client authoritative to joining a remote server. Built atop GodotJS, TypeScript bindings for Godot, which I maintain. Huge monorepo with over a million lines (yes, I’m aware that’s NOT a good thing), and GodotJS itself is not included in that.
I continue to work on my city builder game Microlandia, launched here in HN ~6 months ago. I originally predicted a few dozen urbanism nerds would play it, but now almost 10,000 copies sold. I’m still a solo developer but now I collaborate with 2D, 3D and music artists. Which is good because the original art that I drew myself for the launch was horrible.
I’m currently working on modeling energy, climate and new policies like universal basic income
Man looks amazing, the detail level of the simulation seems to be in another level compared to sity skylines and co.
If you need any help or just chat about this, reach out to contact (At) khorchani (dot)fr
My wife and I are working on a math/science/CS-inspired jewelry business.
We try to create pieces that stand on their own aesthetically but have a hidden meaning. We currently have two styles: lambda calculus based pieces (we depict the lambda/Tromp diagram) where we have Y-Combinator earrings (well, strictly speaking they are one beta reduction away from Y-combinator. Aesthetic oblige) and a pendant depicting a lambda expression computing Graham’s number. The other style is quantum computing circuits, based on quantum computing research my brother (a physics professor) is doing: a pendant that is actually a non-local controlled-NOT gate.
I wrote a tiny DSL to describe the jewelry pieces, and an interpreter to produce CAD files. We then either 3D print them or have them produced by lost-wax.
We are 200% out of our comfort zone (and love it): I know nothing of front end dev, payments, or anything like that. The diamond district in New York is a neighborhood we normally actively avoid, but if you are forced to go there it is fascinating (people examining diamonds on the corner of the street, others in fur coats in summer straight out of a mafia movie…), and especial marketing. Jewelry is a completely saturated business (luckily we are not doing this to pay the rent); we think we have a unique angle, but we are still figuring out the target audience (if there is one).
Store: https://studio-galois.com/
I’m working on a framework for general purpose interactive tutoring systems. An SRS background process over a pluggable system of pedagogy protocols over a given curriculum. This is at https://github.com/patched-network/vue-skuilder, or https://patched.network/skuilder
With this framework, I’m making (among other things) an early literacy app at https://letterspractice.com. My aim here is to hit >= 75% efficacy of Mentava at static deploy: more secure, faster, cheaper). Its pretty solid already, only working on minor things. The main issue is that I think that I have a real cool product (maybe a bit boring, but in a good way) with good values (anti lock-in, privacy respecting, EU centric, fair pricing, no VC money -> sustainable business approach) but I can’t reach the people that would love to use it. So thats what I’m really working on: trying to be more visible.
I’m continuing to work on my daily word game Tiled Words!
I checked my analytics recently and over 100 people have 100+ day streaks which kind of blows my mind!
I released custom player puzzles which has been a lot of fun! I’ve gotten dozens of submissions that I’m working through. People are submitting really clever and interesting puzzles. It’s fun to get to solve puzzles I didn’t make myself! There’s more I want to do here (featured puzzles, categories, etc.)
https://tiledwords.com/player-puzzles/page/1
I think I’ve also tracked down an issue that was causing the game to crash on older iPhones. I’m having playtesters run through it now and hope to deploy tomorrow. (Switching some positioning rules from CSS transforms to SVG coordinates)
I recently made some puzzle brainstorming tools using the Datamuse API which have been very helpful for brainstorming words related to a theme.
I’m starting to debate some monetized features. So far everything is free but it would be nice if my wife and I could dedicate more time to this. If I could get a few thousand dollars a month in subscriptions my wife could quit her job and focus more on puzzle creation and improving the game. If you play and have ideas for features you pay for I’d love to hear them!
Over the last year or so I arrived at a (sort of) MQTT semantic broker that facilitates an actor architecture. It supports federation (including transitive, so proxies “just work”(TM)), transparent outbound buffering with disk overflow and encryption with the noise protocol. Building apps on top of it is a joy. Rust.
edit: ah, yes also a broker controlled component manager that can start, stop, monitor services over the mentioned broker. This is the carpet that brings the room together.
Agent harness for durable workflows, starting with Temporal.
Most agents for durable workflows feel like toy examples. There is no “Codex” or “Claude Code” for, say, Temporal. So I’m building full-featured agent for these runtimes. Why? Because it makes long-running agents easier to operate and scale. Currently, all frontier harnesses need to run inside a guest OS and need a dedicated process, this is quite challenging to orchestrate and maintain.
To make it work, I had to figure out what part to run as deterministic workflow code, and what part to run as I/O or side effects (aka activities). I’m using a CAS for most of the payloads to maintain a lightweight footprint in the workflow code.
Currently supporting skills, MCP, prompts, a virtual file systems, and soon sandboxes.
https://github.com/smartcomputer-ai/lightspeed
I’m working on a system-wide desktop ad-blocker and privacy guard called Zen (for almost 2.5 years now): https://github.com/irbis-sh/zen-desktop
Working on it has been a joy as ad-blocking tech touches so many aspects of software engineering - from systems and security to the intricacies of JS environments in browsers.
Benefits-wise, system-wide filtering disables ads and tracking not just in browsers, but desktop apps as well (which you’ll be amazed how much they do). It’s especially relevant now as Google is re-activating their efforts to hinder ad-blockers by killing Manifest V2 in Chrome. So much of tech is actively bleeding cash on AI right now, which means the efforts to screw over users will only accelerate. This makes something that sits at the network level indispensable imo.
I’m working on my self-host TTS cli application for turning articles into spoken audio which I can stream from my PC to mobile device when I’m out and about.
It’s called Vocast: https://github.com/cnrmurphy/vocast
Thinking about adding some things like queuing RSS feed items to be converted to audio and a feature for being able to do the conversion from my phone.
awesome, your notes and music theory apps are very close to two of my hobby projects as well, the main difference is that my music app is guitar-centric
unfortunately, I did not have the time to pursue them. good luck to you!
I’m working on https://xingolak.pages.dev/
I’ve been learning Basque and wanted to see a visualization of how the semantics move into different grammatical structures when translating between Basque and English/Spanish.
Under the hood it’s using Stanford NLP to analyze the input then that analysis is given to Claude to generate the data structure needed to visualize the translation. It’s really cool and maybe my favorite of the itch-scratchers I’ve built for myself over the years.
(Xingolak is Basque for “ribbons,” a nod to the visualizing metaphor used in the UI.)
When I was working at amazon (left May 8) working on agents was all the rage. Combined with initiatives that set goals for nearly all services to have a MCP built and available by the end of the year agents will be even more emphasized in the future.
However what happens when you actually build and launch your agent is customers try it, do some initial runs and then go ask your manager to automate their use case. That is why I have been building https://toolscaled.com/ The goal being work through your problem space using agentic chat (like Claude Desktop) and then at the end convert it to a workflow. I am pretty close to launching and have been testing. If you’re interested send me an email! (if you do sign up just fyi its still in beta so YMMV.
Mainly https://www.vaava.app/ is a baby tracking/logging app I originally built for myself, now available on both app stores. All the user generated data is stored only on device and is transferred in local network to users who you have paired the app with. There is 0 behavioural analytics, even the crashlytics are 100% optional.
There is a couple of semi-unique features; you can use your voice to dictate and generate events (feeding, sleep etc), you can also scan documents for growth measurements.
You don’t need user account to use it, there is no subscription, the paid features are available behind a single purchase for lifetime. Still, like 90% of the features are available for free. Also https://www.athilio.com/ privacy focused, highly customisable personal data analytics for your Oura, Garmin, Polar and Apple Health (ios port coming soon). Of course there is couple of AI features (with a single switch to turn all off), originally those were built just so I would learn how to embed agents in sw products myself. The whole app was originally built for personal use to fix missing features in the manufacturers own platforms:
- Period over period comparisons (this month vs this month last year)
- Comparing different metrics
- Customizable graphs and other widgets
- And of course combining the manufacturers metrics (oura for sleep, garmin for training etc etc)
Existing solutions for this kind of software seem to have focus on social (strava), or coaching (training peaks), or they are just straight up crazy expensive with their paid tier (both tp and strava for example).
Thanks! Yeh focusing on privacy is good differentiator, large established players just cant really compete in that area in a similar manner. It also reduces operational load from myself when I dont hoard user data. And of course the customer gets a service that respects their privacy. But when focusing on privacy there needs to be adjustments and compromises on UX and such in some areas, but you got to so say no to somethings when sticking to your values!
After getting the top spot in What Are You Working On in Feb 2025 ( https://news.ycombinator.com/item?id=43157056 ) I started a company on that idea at https://getcomper.ai . After solo building for 11 months I found a co-founder, got an angel investment, then got some ex-Miro folk on board and we are now building the product at breakneck speed.
We’re a collaborative canvas + context engine for all the code and docs in your company, with a zoomable UI + CLI , where you can collaborate with your co-workers and agents.
We map technical debt, agent readiness, code complexity, security scanning, bus factor and more, so you can easily see how all the software in your company runs.
One of the most complex things is our incremental git blame engine built on top of GitOxide, as our backend is fully built on Rust. Our frontend is built on PixiJS so you can explore at gaming speed with 60Hz refresh rates.
Recently we sponsored Rust Week in Europe and a hundred or so developers tried our mini-game which is GeoGuessr for code, and got rave reviews. Future is looking bright!
That’s a pretty neat idea. What does “map technical debt, agent readiness, code complexity” look like? How does that get done?
I’ve been thinking a lot about soul cultivation as a concept, and the general structure of the soul, and doing a bit of writing on the topic. I feel like this topic is surprisingly under-discussed and under-explored relative to how impactful it is. By soul I mean “the part of you that is an observer”, in case this isn’t clear. I think a lot of discourse gets caught up with metaphysical speculation instead of focusing on what is there and what is knowable.
Most recently I was also probing people about how they conceptualize of the soul, making my own drawings, and asking others for drawings. If you have a few minutes I would also be interested in seeing how you would draw a soul, given pen and paper or equivalent materials. It often feels like for a lot of people the concept of the soul gets comingled with very confusing definitions.
There’s a general problem where certain concepts become so overloaded that just disambiguating and clarifying what is meant becomes a challenge. I will note that if your first thought or question is whether the soul is even real, you might be confused about the definition or we might be referring to different concepts.
Drawing a soul sounds inspiring. I could give it a go sometime. When you asked I realized I still hold a mental model of a spirit animal.
I’ve been considering new features on Book Bounce for my use cases. I’m pretty hesitant to start anything new on it while I’m waiting for approval for Google Play…
https://bedtimebookhelper.com/
In the mean time, I’m working on a recipe application I’ve had countless false starts on. It’s centered around iterations and version on recipes, tracking changes to ingredients and directions to build new a new recipe from an existing one.
I’m starting with a go Bubbletea tui this time and I’ve been having a lot of fun with it compared to the React SPAs I’ve tried before. Not feeling compelled to style anything while working on the UX has been nice.
I’m working on https://getvedahome.com
My mother had a stroke a little over a month ago and I don’t live close by. I went in search of a wellness product that would let me know how she’s doing without her feeling I’m prying too much. I didn’t find one, so now I’m trying to build it. I’m also working on moving closer.
I am working on a navigation app to handle road trips with friends.
The idea is to handle the whole thing, from meeting up at the start point, to multi-day trips, gas stops automagically planned in where you need them.
iOS only right now, Android support is planned but not a priority.
It’s a bit of a passion project, as it solves a bit of a “personal” problem, I realize its niche.
I am also not a software engineer, but a DevOps engineer, so it’s entirely written by Claude in Swift + Swift UI, Typescript for the backend.
I thought this might be interesting - but I’m on PC and there are no quick ways to pop on that site and see the app in action. Like no screenshots or anything? So I left and likely will never be back. Always good to have some quick screenshots/gifs of apps in action or people bounce on your landing/sales page never to be seen again.
Thanks for the feedback, at some point once the UI is more “stable,” there will be more screenshots, I realize it’s a must before I go actually live.
I’m still working on a self-hosted search service called Hister with the goal to reduce dependence on online search engines.
Hister is a full text indexer for websites and local files which automatically saves all the visited pages rendered by your browser. It provides offline result previews, a flexible web (and terminal) search interface & query language to explore saved content with ease or quickly fall back to traditional search engines.
I’ve been using it for a few months and as my local index is growing I can avoid opening google/duckduckgo/kagi - and even websites listed in results - more and more frequently.
The initial reception is overwhelmingly positive with already more than 30 contributors and hundreds of contributions - perhaps you can find it useful as well. (Or at least have some constructive criticism =])
GitHub: https://github.com/asciimoo/hister
Website: https://hister.org/
Small read-only demo: https://demo.hister.org/
I’m working on water treatment equipment that does not use chemicals. Manufacturing is bloody hard!
We are in the process of writing our own vertical stack with Go to control the machine instead of expensive and handicapped solutions from Siemens and etc.
I’m working on a competitive coding gameshow. I’m imagining a combination of great british bakeoff, battle bots, and dota. Basically contestants get dropped into a fully equipped dev machine (all the bells and whistles one could want/expect including neovim, agent harnesses, cool styling, etc and if you want you can always clone your dotfiles and stow them!). I’ve gotten a decent prototype that live streams from Fly.io sprites to twitch, and I’m able to voice over or have OpenAI do commentary on the match. I’ve got a demo here: https://www.twitch.tv/videos/2792893261. Still a ways to go, but it seemed like a fun way to tinker with Sprites.
Continuing to work on a high-performance observability / log analysis SaaS:
https://logging24.com/landing_a/
The basic idea is to make Regex-scans so fast/cheap that “a metric” can be anything numeric in the text and “tracing” is useless because you can just log (and filter) more things. Turns out Regex at >200GB/s solves a lot of problems.
Metric cardinality explosion is immediately a non-issue, histograms have arbitrary resolution, and you can get from histogram pixels back to the underlying logs. And no need to instrument everything thrice for logs, metrics and traces.
The next big feature I’m aiming for is needle-in-a-haystack searches. The data block headers support it already, but the scan engine doesn’t yet use it.
Zero to two, depending on how you count, exactly.
It’s a side-project from our consultancy work. We’re two deep technologists and so far entertaining the notion that we’re very bad at (product) sales. But we’re trying to learn that now.
A small thing I’ve been building as an antidote to doomscrolling. Open a new tab and see a public domain artwork from a real museum: https://toregard.art
Mostly I wanted more art and colour in my workday - something to look at, learn through and draw inspiration from in the moments between meetings and code. You can create an account to save your favourites and curate your own gallery. Just released collections that you can make public.
Art from: The Metropolitan Museum of Art. Art Institute of Chicago. Rijksmuseum. Cleveland Museum of Art.
I’m developing a class for non-technical people on the responsible use of AI.
Continuing development of online training for software testers, with a heavy emphasis on AI, since that’s where the demand is.
During a livestreamed demo yesterday, I ran into a ridiculous bug in Copilot for Excel. After all these years Microsoft still can’t manage the basics of reliability and still deny that they need good testers.
I’m working on GPS tools to help support my current contract. I’ve found there are no good tools for tracing a route on a map and having a mobile device think it’s traveling that route. I’m not just talking GPS coordinates, but speed, direction, motion detection, precise timing between waypoints, being able to play these trips forward and backward, step by step, etc. I’m talking time-travel debugging for GPS applications.
It’s still early days, but I have a demo running. Unfortunately, it requires using a drop-in replacement library for CoreLocation. That alone may make it infeasible.
I’m using AI to de-compile NeXTStep applications back to Objective-C source code.
The idea is decompile something like Wordperfect or Framemaker, then port the NeXTStep code to GNUStep and have WP on GNUStep/Linux.
A tool that creates sandboxes (docker, podman, orbstack, seatbelt, tart, containerd, kata, firecracker) and then sets up an agent (claude, codex, gemini, aider, opencode) inside it with max permissiveness (no annoying permission prompts).
It creates its own copy of your workdir for the agent to play in, and then you pull changes out ala git diffs or commits.
$ yoloai new mybugfix . -a # launch default sandbox in . and also attach the terminal
# Work with the agent...
$ yoloai diff mybugfix # See what it did
$ yoloai apply mybugfix # Bring out commits and/or uncommitted changes.
$ yoloai destroy mybugfix
And it’s FOSS: https://github.com/kstenerud/yoloai
Im currently working solo on the only autopilot agent and thinking partner for android. Its called twent.xyz . Wait. I got more to show you. Im also building signupdoggy.pages.dev which is an API based service that blocks fake signups. Could be temp emails, could be temp phone numbers, we block it all.
Rust, Go, Typescript, JavaScript, Python, Ruby, React, Dart, CSS for now. Rails is almost done, Django, fast API, JVM languages coming soon after.
You can try the first module of any course without login, all beginners courses are free after login, a subscription is required for advanced courses
Audion - a scripting language that is very fun to write and lets you make interactive music, installations, generative compositions etc https://github.com/audion-lang/audion using supercollider or any daw and hardware. AI picks it up easy so Agentic coding in Audion works very well too.
https://www.storystarling.com - create a non-fiction children’s book explaining your super-niche-geek topic to your kid. Pick any topic, your kid becomes the little explorer, we illustrate and print it. Requires registration, but then lets you read the whole book before paying.
Easy-search - https://github.com/BlueInt32/easy-search
TUI based interface to search in your files very quickly. I created it from the need to have an equivalent of voidtool’s Everything on Linux. It’s a bit different though because it’s keyboard based. You define zones where you search for files most of the time, and you can manage previous files history.
Then there are actions you can perform on each file/folder.
I’m working on Peak Flow Meter Diary, a simple app to help people with asthma record peak flow readings more easily, then combine those records with environmental data to provide earlier warnings about possible triggers.
In the UK alone, around 7.2 million people have asthma. Globally, WHO estimates that asthma affected 363 million people in 2023 and caused 442,000 deaths. Peak Flow Meter Diary is not meant to detect every possible trigger. It will not warn you if someone suddenly sprays perfume nearby, or if a dusty bag is opened in the same room. But it could help with risks that can realistically be monitored ahead of time, such as weather, pollen, pollution, cold air, storms, and similar factors. The aim is to make daily tracking easier, show simple visual warnings and notifications, and make it easier to share useful records with clinicians. I’m also trying to build it in a way that reduces paper, plastic, and electronic waste. If funding allows, I would like to make the project carbon-negative.
That is the bigger dream: to make a small example of how even modest start-up can think about environmental impact from the start, and use it as a practical showcase.
The pitch and full project explanation are here:
https://www.kickstarter.com/projects/why5/peak-flow-meter-di…
Feedback welcome, especially from anyone with asthma, clinicians, carers, or people who have worked on health tracking tools. By now I know that my kickstarter is not going anywhere, so I would value any input was the idea that bad, or lack of marketing and accessing appropriate groups etc. I think this community has a lot of experience so I would like someone to share what could have I done better. Do not be shy to tell me if you think idea was waste of time.
I learned to program with KidSIM and later Stagecast Creator, a spin-off of Apple’s Advanced Technologies Research Group in the 90s. I’m re-creating it so a new generation can learn the fundamentals of object-oriented programming the same way I did. I’ve been working with Dave Canfield Smith (one of the original authors and also inventor of the icon ) and it’s been a blast to bring back my earliest memories of programming. All open-source and free of course.
Adding agents to my SQL canvas (https://kavla.dev)
Here’s a live example of it figuring out when to post on HN: https://kavla.dev/hn (spoiler, its noon UTC on Sundays)
And here’s it generating an interactive map of 20000 earthquakes: https://kavla.dev/quakes
I feel like the canvas is actually a great way to interact with an agent, everything it does is visible, so auditing what it did is (relatively) easy.
I still got some credits to burn so agent usage is free atm (you still have to sign up to use it though)
I’m working on Totem (https://totemkb.com), a collaborative knowledge management system built entirely in Rust without any HTML or web-tech. Currently supporting Windows, MacOS, Ubuntu, and iOS (although the iOS build is currently in review).
Although the goal is to build an efficient all-in-one-workspace, I wouldn’t run a company on it just yet. Right now I’m looking for early adopters who don’t mind the rough edges and relatively minimal feature set.
You can grab an early build at https://alpha.totemkb.com.
New workspaces will be in a 14-day ‘trial’ mode, email rohit@totemkb.com if you’d like me to upgrade your workspace free of charge.
Thanks for flagging that, you’ve likely saved me a few days of back-and-forth with Apple’s reps for the iOS review process. Fixed now.
I’m making a TypeScript type checker in Rust.
tsz is my main side project. Trying to learn from this for how to make software in fully automated fashion. tsz’s goal is to match tsc (tsgo) but perform better. I am not passing all tsc’s own test cases and working towards making it work on complex type packages.
https://github.com/tsz-org/tsz
I’m working on an open source and customisable/configurable warehouse management system.
As it’s open source and built with a codebase that’s easy for LLM’s to work with, users can download it and tailor it to their business/operational requirements, although it also has out of the box ‘industry best practice processes’ so you don’t have to reinvent the wheel and can only focus on writing the 10% custom stuff which differentiates your business.
As all the processes are flexible, you can also do proper ‘continuous improvement’ with your staff - something traditional WMS products struggle with.
No link because I’m finalising it at the moment, but if you are interested please reply!
I made a book, Simple Machines Made Simple, and I got about 11k copies shipped to my house about two weeks ago. I’m now trying to fix all the books and get them shipped out. They are books with little mini demos in them, and about 80% of the books need some type of rework. So it’s going to be a long few months.
I also made Computer Engineering for Babies which I’ve posted about on here a couple times before.
Working on Margin Points (https://www.marginpoints.com/): a daily essay series on business and tech. Already over 80 essays in. I’m playing around with a daily live call-in show for readers who want to discuss ideas while the essays are rough drafts and help shape the thinking.
You play a duck in a small shared town. You pick a job, pay rent, post on a Twitter-style feed, vote in local elections. The simulation keeps running when you close the tab. No PvP, no loot boxes, no combat. Playtime is a few minutes a day by design.
seeing how far 1 person project can go with Zigpoll: https://www.zigpoll.com
Crossed over 100K MRR and I’m shooting for 2M ARR by the end of the year. Growing something in this stage is totally different from making it go from zero to one so it’s an interesting learning curve. AI has also changed the calculus as well where it seems less crazy to try and do this sort of thing. Time will tell!
• A social ebook reading app where you can create reading groups and have realtime discussions.
• A visual moodboard and notes app that uses local models to link and surface content, a bit like an AI powered Memex.
• A new UI design tool for Mac/iOS with deep support for design systems and AI agents.
• A CMS and static site generator that runs entirely in the browser. Download the site as a zip or publish directly to GitHub/Netlify.
https://github.com/sparktype-project/sparktype
I’m build open source : Sovereign AI Infra, Deployed in Minutes.
Deliver Private AI in your cloud organization. Everything in full control.
The idea is simple: Its handle of the complexity for AIOps infra like GPU VM provisioning, NVIDIA driver setup, Docker setup, model download, and launching the inference server. User can run any OSS and AI tools inside their cloud.
website + video demo: https://www.dagploy.com
github : https://github.com/dagploy/dax
Putting finishing touches on an open source multi sig solution to authenticate digital artifact, aiming to increase security of the software supply chain. It’s open source, completely self hostable, incl internally, support air gapped signers, fully auditable (data store is a puglic git repo). It’s an alternative to sigstore, making different decision.
Website: https://www.asfaload.com/
Code: https://github.com/asfaload/asfaload
I’m building a plugin for Ghidra called Specter that aims to bring semi-deterministic agent workflows to Ghidra. It adds a terminal like interface to Ghidra’s code browser where you can chat or run DSL queries.
The project is currently 100% vibe coded with codex\gpt-5.5, but after running some experiments, I’m working on replacing some of the vibe coded SQL engine with Apache Calcite.
https://github.com/coldentry/Specter
Compiled agents: http://squig.com/
It takes your instructions, write a versioned spec, then generates a hybrid workflow of code+LLM calls and protects it with tests/evals
The result is that the agents run much faster (90% of it is code), cheaper (LLM steps are scoped tightly and uses smaller models) and reliably (specs get turned into coded state-machine)
I’m working on “Fetch”, a native macOS client for ClickHouse.
The idea is to make querying ClickHouse feel more like using a polished desktop with ClickHouse native features :
It’s built in Swift/SwiftUI with Monaco as the SQL editor.
Screenshot:
https://ibb.co/gbW4rW7G
Been building a file manager for almost four years that combines the best of Notion and Obsidian while remaining a competent file manager in the process. It’s called Phials.
Not technically released even though the site is live, but close enough to a beta at this point.
Trying to write a formally verified simplified (1D) implementation of Ruckig, more to learn the tools than for the result, although I want that too. Some fun challenges with numeric stability (using the big hammer of arbitrary precision to address that for now), etc. Still don’t have a real path to bridge correctness arguments through a formalization of Sturm’s theorem or similar, accepting it as an axiom for now.
I have been building https://longhorizon.dev
It let’s developer do test planning and testing automation using their coding agents. The records of the testing sessions are then shareable and can be added to PRs, giving the reviewers visibility into how the feature works, what scenarios are handled and tested and what might have been missed.
I’m beta testing a small abstract strategy game I invented and for which I trained an alphazero style AI, https://span.game
I’m making a baby book for my son Henri featuring famous Henri’s through history.
I’m also building a zigbee free/busy eink display that only needs to powered once a year or so
I am building on a publishing platform that aims to go against some of the tide.
Strictly human content, pagination instead of endless feeds, one-off payments instead of subscriptions, linear feed by default, public profile scoring instead of secretive algorithms.
Hope to share it soon around here, too.
MathBreakers, Your Limitless Math Universe. It’s a math game platform teaching fundamental grade school concepts like Fractions in an immersive 3D world with virtual manipulatives (no equations or worksheets).
Re-reading the Lean Startup to hone our GTM, market validation and growth engine.
learning to build local coding agents with mastra framework, doing basics at the moment, like reading the code, editing.
if you have built coding agent in the past using mastra, what are the problems you have faced with mastra? does it support complex branching/context trimming and other features required to efficiently manage context for AI agents?
I made Docker not suck for large images. 2-10x faster depending on the operation. I’ve spent the past two weeks burning down the last bits needed to release a BuildKit integration.
I’m building a little tool to organize my sheet music, let me share it, organize rehearsals, and manage performances.
Oh hey, I’m building something loosely related to this too. Can I ask what need isn’t being met by say, Forscore?
Been working on making it much easier for application deployments to get access to a isolated database/schema. The usual pattern currently is to assume that each app creates a new database, which ignores the backups, monitoring etc required for each database. Implemented support for Postgres and MySQL.
Wrote up more details at https://openrun.dev/blog/service-binding/
Currently working on HN Alerts — a simple free site I made to alert me (via email) to trending stories on Hacker News.
It sends me an email once a story hits a certain number of upvotes per minute, so it’s useful for keeping track of breaking news.
It’ll also soon allow you to get alerted to specific words or phrases in titles. (I have one set up so the monthly hiring threads notify me as soon as they appear.)
It sends me an email once a story hits a certain number of upvotes per minute
So do you get one email per-story that fits this criteria? Or is it some kind of roll-up?
Typically one email per story.
It checks every 5 minutes, and if more than one story happens to meet the criteria during that 5 minute bucket then it’ll put them into one email (so the “hiring” checks appear in one email). But in reality because it’s rare that 2 stories will trend within the same 5 minute bucket it ends up being one email per story.
If you’re not aware of “sync rights”, it’s probably worth reading up on given your interests. There is an entire specialization of music copyright law focused solely on synchronization of music to visuals. The good news is that studios almost never obtain this set of rights to the music they publish (because historically there wasn’t enough money in it to justify negotiating for them).
2 things:
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A hand-crafted browser game-engine and game for the engine, with things like determinism at the core. I will be launching soon and can’t talk too much about it yet because its quite novel. It actually has quite a few novel ideas within. Very minimal usage of AI in this project, I’ve been working on it for ~6 years now. A bit toooo long.
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A pure slop-crafted browser extension, because I paid for claude code Fable and it got rug-pulled so I am burning my tokens on a 100% slop project just to see what hands-off coding is actually like. A slight distraction from project 1 I do when I’m feeling a bit burnt out. Super fun so far proc-gen type stuff. Derivative
FreeBSD 15.1! Scheduled to be announced 2026-06-16 00:00 UTC; just need to get some release documentation polished now.
I’m writing an extension to the mkv file specification to embed simple scripts that would allow someone to do choose-your-own-adventure style videos directly in the file themselves without outside assets. I’m also making modifications to VLC and mpv so they can play these directly. I’ve had some success already, but I’ve discovered a few features of existing videos like Bandersnatch that I’ve had to go back and add into the specification.
On top of that, it’s lead me down the rabbit hole of a 1995 (limited) theatrical movie called Mr. Payback, which may have only ever existed on 50 sets of laserdiscs distributed to those theaters. I’m hoping to track down a copy of it… if anyone had any clues on that one, I’d love to hear them. I’d purchase a Domesday Dupe device and dump it. But it may be a genuine lost movie.
I’ve been thinking about and working on a solution to automatically resume a Claude code session in the same terminal when my quota resumes. I hate waking up and typing “please continue”
I’ve been continuing work on cardcast.gg. It gives you the ability to play Magic: The Gathering with your friends remotely using a webcam.
In the last month or so I added a few nifty features:
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Auto-scan functionality: Instead of having to click on cards to discover what they are, I can now do whole-frame detection on an interval (configurable), so players can mouse over the webcam stream of another player and automatically see what the actual card is. Super helpful for deciding who to attack and makes turns quicker!
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Card view is now grouped by player, since auto-detection will populate a lot of cards during the course of a game.
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Switch the video stream to Livekit from my homebrew version. Players were having video trouble and I hope Livekit is good enough so solve that problem.
Next up: I really want to build a community around this, and I’m struggling on getting the word out to people / having them try it out. I’ve done some SEO and word of mouth advertising, but haven’t had much luck. I feel like I need to switch directions a bit. I’m a developer by trade, so this is wholly new to me.
Come check it out: https://cardcast.gg
Two things:
CRM with agent baked in that can properly do stuff. No idea why attio/twenty are soooo bad at this. It’s a table. getcrme.com / https://github.com/ChristianSch/crme
and gargoyle, an activitypub server with a (theoretically mastodon compatible UI) https://github.com/myfedi/gargoyle. Was annoyed at the homogenous fediverse dev teams out there that don’t want their precious service federate with others. I want more federation (tested it with bookwyrms and lemmy for now. Mastodon/GTS also working ofc) and a pretty UI and not waste time with weird identity politics. You do you. I want an open fediverse, not a filter bubble. And GTS was too hard to hack on.
still working on https://hcker.news, which has an absurd number of features that improve your QoL when reading hn.
i’ve massively improved a bunch of things like the AI filter, which now gives you the option of filtering out github repos with AI authorship.
Also improved comments, which I’m serving through my own backend which has made loading of comments super fast, and it’s going to be the foundation for some really great other features coming soon.
Soon: HN feature parity via browser extension and sync’d accounts.
A very simple idea: when you eat more than your maintenance calories, you gain weight; when you eat less than your maintenance calories, you lose weight.
By using an algorithm, we can accurately figure out your maintenance calories more accurately than traditional regression based formulas like katch mc ardle.
It’s way more accurate than calorie burn tracking devices like fitness bands and watches. (garmin/apple watch etc…)
MacroCodex helps you spot dips in maintenance calories from metabolic adaptation, then auto adjusts your calorie target and macros so your plan stays aligned with your real maintenance calories (TDEE).
It’s very useful to those who find it hard to gain or lose weight.
it’s a completely free app, no paywall, no unnecessary data collection.
Built TechnoJam (https://technojam.app), a music-making app for kids 4+. It’s a DJ launchpad (drums, bass, melody, chords) but every tap is quantized to stay in scale, so kids with zero music knowledge can have tons of fun making electronic music.
Deliberately no ads, no subscription, no tracking, works offline.
Working on a claims automation service for a pet insurance company I work for. Interesting because its backoffice facing but still helps our end users to get their reimbursements faster and makes the feedback loop when we need more documentation from them shorter.
Built an app that helps you detect if a video (tt/reels) is lying about those “do this and you’ll make 10k a month”!
still very early and im trying to keep it very affordable, since the whole point is I dont want people wasting their money on hustles that were never legit
an app that helps you detect if a video (tt/reels) is lying about those “do this and you’ll make 10k a month”
There’s a Unix CLI tool that implements an accurate version of this… check out /bin/yes.
not quite, it doesn’t just flag everything as false. Some hustles
come back with high legitimacy scores and realistic income ranges
that actually match the claims, but might take longer to earn the first dollar. The point is separating the method from the creator’s real monetization — sometimes they’re the same thing, sometimes they’re not. if people are gonna fall for these quick hustle tactics and lose money, id rather them use this and make sure its not a full waste of time
Personal (as in, “for personal use, not a product”) conversation partner — I speak in German, one level is correcting the mistakes, allowing me to reformulate the statement, another level is responding to the intended idea. Rinse, repeat.
I have been experimenting with methods of reading books and creating software for these methods.
For example, I was inspired by the activeness of typelit.io when reading - typing out an entire book helped keep my mind from wandering when reading. But typing the whole book is too tedious. I wrote a few scripts to mirror the words on an epub, which does help with focus but isn’t quite good enough.
My current epub reader software I use requires you to press a button to reveal the next word. This has dramatically improved my reading comprehension, prevents inadvertent skimming, and keeps my mind from wandering.
I’m still experimenting but for those who have ADHD or are borderline ADHD, it’s quite a revelation - I can finally read without my mind wandering.
Nothing because I’m terrible at coming up with useful ideas for something that hasn’t been done a million times over.
C++/python/networking/systems/web developer for 30 years with plenty of free time