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Posted by david927 14 hours ago

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

What are you working on? What have you been curious about lately?
142 points | 413 commentspage 7
eric_khun 2 hours ago|
Got lot of traction on a multiplayer web game pong [1].

Now working on releasing on steam, android, ios. Also made an ssh version you can access via your terminal [2]. Hoping could get as many downloads in native platforms.

[1] https://antics.gg/p/side-out-94df7d

[2] https://antics.gg/ssh

duranduran 3 hours ago||
I've been working on a summit-level wind forecasts for 16 mountaineering objectives (Rainier, Whitney, Denali, Mont Blanc, the Matterhorn, ...).

It's mountaineering safety tool I've been making for my friends and I.

The fun part: if your browser has WebGPU, the page solves that field live as a compute shader (about 35 ms on an Apple GPU) as you scrub the timeline, and draws the flow over a 3D terrain view. Browsers without WebGPU get a precomputed field.

https://mattduran.dev/summitwind/

Ranges and uncertainty only, no go/no-go verdicts. That still requires your best judgement as a mountaineer. Next up is a free-play mode where you set the wind direction and speed yourself and watch the field re-solve.

SomaticPirate 3 hours ago|
This is super cool!
ToriTech 3 hours ago||
I've been working on anti age verification/surveillance projects lately. I put together this thing I call The Mandating Honeypots Project and it shows how anyone with an internet connection and copy + paste skills can trick Linux D-Buses with a simple Python script, proving that if companies want to verify your age by asking the D-Bus interface, it's easy to just tell it to always send 18+, making the whole thing useless. The only reason you'd want ID verification is so you can create the world's biggest and sweetest honeypot.

(https://github.com/Tori-Tech/Mandating-Honeypots-Project)

In that project, I also proposed a tool with heavily redundant password protection that parents could use to keep kids from tampering with the service so the government can stop saying that this is for the kids. I'm planning on doing a mobile device version and/or an ID database focused version, but that's still in the planning phase.

I also want to do a Windows version when they release their 'GetUserAgeRangeAsync' API, but idk if I'll be able to. Windows is always a pain to work with.

It'd be nice if someone had advice or ideas to share, too.

robgough 6 hours ago||
At the beginning of this year I was fractional CTO at a small b2b startup and was surprised by how what I considered to be the basic requirements of a customer support platform was split across multiple tools and all priced per-user. This essentially forced a small team to limit who in the org had visibility into what was being communicated to customers.

I set out to solve that with https://stayupfront.com and now that the build is in a good place i’m finally having to bite the bullet and learn marketing. I’m also realising that all the advice to start with marketing first was probably good advice!

LamGC 4 hours ago||
I am currently developing a great encryption tool for long-term highly confidential files in the post quantum era, but I am still concerned about any issues with it, so I am personally using it for a period of time to prove that this tool can be released as open source! (I plan to personally use it to encrypt and backup some of my GPG keys offline, then burn them onto M-DISC discs and store them in a bank safe)
stackghost 4 hours ago|
> I plan to personally use it to encrypt and backup some of my GPG keys offline, then burn them onto M-DISC discs and store them in a bank safe

Won’t that make it difficult to rotate your keys?

Keys should be something you don’t hesitate to throw away and rotate at the first hint of a compromise.

LamGC 4 hours ago|||
My GPG key is renewed expire date every 2 years, and the main key and sub key are separated (the main key is stored offline, and the sub key is on YubiKey). The private key does not need to be updated regularly, so it can be directly encrypted and saved in the backup.

I think this is a good balance point, and I estimate that if we want to rotate the keys completely in the future, we should start using new key algorithms. (I estimate it will take another 5-8 years)

LamGC 4 hours ago|||
> Keys should be something you don’t hesitate to throw away and rotate at the first hint of a compromise.

Yes, when certain situations arise, it is necessary to rotate the keys as soon as possible, but in the absence of such situations, losing key backups can be catastrophic.

BozeWolf 1 hour ago||
https://mengi.cloud

Clusters ready to deploy you applications on. It is meant for companies who want their own private infra, but do not want to maintain it. It is multi cloud, with a focus on europe.

Our secret weapon is “Menno”: an assistant which helps you setting up the cluster and deploying applications. We use the assistant for handson demo’s and workshops and got some really good feedback on it.

cutwaterflow 6 hours ago||
I’m building https://www.freefocusgames.com, a free collection of browser-based attention and working-memory exercises, including Dual N-Back, Stroop, Schulte tables, attention-control exercises, and memory games.

I started it because I wanted simple brain-training exercises that didn’t require an account, app install, or subscription.

It’s also open source: https://github.com/loethen/freefocusgames

aprct 6 hours ago||
Just a heads up: The word memory test is case sensitive. My mobile phone defaults to capitalizing the first letter of those inputs, so the result was 0% accuracy despite technically remembering the words. I don’t know if case sensitivity is deliberate, but I chose not finish the test.
cutwaterflow 2 hours ago||
Sorrry about that! It definitely wasn't intentional - i've just fixed it. Thanks a lot for the heads-up!
switchbak 5 hours ago||
That takes me back. I made an unreleased Android dual-N-back game in the late 2000’s, in Scala no less. I got a little bummed when the big claims of the N back training failed to be replicated though.
cutwaterflow 2 hours ago||
Scala on Android in the late 2000s? That’s seriously hardcore! Back then I didn’t even know how to write code yet. That definitely brings back memories of an earlier era.
pivot_root 1 hour ago||
Using a local model (qwen 3.8 27b) to evaluate and tag public domain images from US national parks to find the best landscapes.

They are sorted by predicted aesthetic rating and can be filtered by time of day, color, orientation, and park.

You can see how it’s going at https://joshkaspar.github.io/vistarium/

asar 1 hour ago||
Working on a mobile interface for terminal multiplexers like tmux/zellij/herdr. This focuses a lot on my need to manage agents on the go, it's been quite helpful to myself so far.

MIT licensed and available on GitHub

https://github.com/AltanS/collie

moinism 1 hour ago|
AI agent for content creators https://chatoctopus.com
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