Ask HN: What are you working on? (September 2026)

Posted by david927 1 day ago

What are you working on? What have you been curious about lately?

312 points | 971 commentspage 34

thedetailsguy 1 day ago|

I’ve been working on Pick Up, a reading companion I built to make tracking books feel a bit more personal and fun.

You can track what you’re reading, keep notes and reflections, see your reading stats, build out your bookshelf, and a bunch more. Over 4k monthly active users.

Been building it solo & adding features based on what readers ask for.

https://pickupreader.com

yashness 23 hours ago||

Push notifications for AI agents, but better. It eliminates baby sitting terminals & let's you go out & approve key decisions while you're also notified of the proof of work.

https://notifier.aicrew.in/setup

It renders markdown, screenshots, can send as audio, allows approval & free form reply when it direction.

iOS app - https://apps.apple.com/us/app/agent-notifier/id6763598043

dakinitribe 20 hours ago||

Convek https://convek.dev/ It's an API (first one) for soaring specific weather data, based on RASP, for paragliders, instrument makers etc. 24 sign ups and ~5 active users, no subscribers yet (one person paid for a month though!). Along with widgets and daily emails for gliding clubs. Trying to get every country but, waiting for some users to add another server (RASP is very compute heavy)

sponno 1 day ago||

https://tiny.help

I got so fed up with my support system, and after years of using tools like Intercom, I built my own platform with everything I've ever wanted in a support desk. The biggest upgrade for me was the MCP connection. I can pull down a ticket with a bug and solve it with Claude (or Codex) and get the agent to fix and then draft a reply in my own voice. It also allows customers to connect their agent to my support desk and ask questions. This would be agent to agent with a human in the loop. But the normal day to day stuff is mainly live support or AI enabled support.

sobellian 1 day ago||

I'm making an online guidance solver for KSA (https://ahwoo.com/app/100000/kitten-space-agency). It will allow you to control a KSA rocket from the command line for a variety of maneuvers (launch, rendezvous, etc). It uses successive convexification to turn the full nonlinear problem into a sequence of convex problems with linear constraints and quadratic objective.

It has proven surprisingly resistant to AI so far - Astra can make a very quick prototype but upon review it had many defects. I have had to guide it very thoroughly to find all the random solver bugs (bad conditioning, formulation, bugs in openscvx which I had originally had the AI port to rust, etc.) preventing well-behaved solves. But I think (hope?) I have turned the corner on these.

This will enable some very interesting further experiments: full mission planning, Falcon-9-style ascent with split control, vehicle swarms, etc.

pingou 18 hours ago||

https://sumochess.org, a variant of chess where you cannot take pieces but have to push them off the board (and check mate like in real chess).

More intense than normal chess because more pieces stay on the board, and because the push mechanism add to the complexity.

mbvisti 6 hours ago||

version 2 of andurel, Go web framework, that brings inertia v3 support, sqlc-like model layer and opentelemetry as a first class citizen

https://andurel.com

rukshn 21 hours ago||

Hi All working on an open source tool to manage knowledge base from one person (consultant/freelancer) to a organization. Built for both humans and Agents.

Currently building for myself and managing my own work with it, would vision something alternative for confluence.

Would love to have more collaborators helping to build an open source project - https://github.com/entangle-cloud/wave

yitchelle 23 hours ago||

I have been researching powerbanks as my current one of 10 years just died. I was dismay at the disarray of information, so I started to build a comprehensive list. First it is across the major players, Anker, Belkin Ugreen texc. I will expand to others we I come across them. Their basic data is shown, but I want to start collecting data such as "is it approved for flight?" or "its form factor".

https://www.powerbank.energy/

lvduan 13 hours ago|

I built this sql formatter <https://sql.leuduan.work> for my own use - it works by parsing the SQL query to AST using native engines where possible (for BigQuery it use GoogleSQL library, for MSSQL it uses Microsoft ScriptDOM, the rest uses Apache Data Fusion Parser) and from the AST it re-generates the SQL query in a consistent formatted style. You can throw in all kind of badly formatted SQL queries and it will work just fine. Hope you find it useful!

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