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

Posted by david927 |3 hours ago |23 comments

akavi 3 minutes ago

A relational querying DSL: https://github.com/akavi/yarrql/

“Compiles” to SQL, but with a different structural paradigm.

johnbender 3 minutes ago

FM day job:

Interpretation of SysML activity diagrams as temporal logic for use with state machine specifications.

Module system for state machine with scoping, ownership type system and attendant theorems to carry proofs of LTL properties about individual parts forward after composition.

seanwilson an hour ago[1 more]

A tool for creating CSS color palettes for web UIs that pass WCAG accessibility standards for color contrast, where you can fine tweak all the tints/shades quickly using a hue/saturation/lightness curve editing interface:

https://www.inclusivecolors.com/

Unlike most tools based around autogenerating colors, this is more of an editor that lets you fully customise all the tint/shades to your liking with a focus on accessibility. This is important when you've got existing brand colors to include and want to find accessible color combinations that work together.

Would love feedback in general and especially from designers/devs who have different needs in how they go about creating branded palettes!

albingroen 5 minutes ago

A open source feedback ingestion platform called Teak

https://www.useteak.com/

treelover 6 minutes ago

Chipmunk'd versions of songs on Youtube: https://www.youtube.com/@ChipmunkEstudio Taking song requests!

barrell 3 hours ago

Visually I’m working on a new landing page for phrasing. It’s almost done, just need to record a few videos: https://phrasing.app/next

Behind the scenes I’m rebuilding the sync engine to properly support offline mode. Trying to get to instant opens for the app (and of course work offline). It’s probably my 5th sync engine. It’s been really fun to see how much easier, faster, better, etc each new iteration is.

(And the project at large is https://phrasing.app - a language learning app for polyglots. It’s like anki but designed to be enjoyed)

zahlman 3 hours ago

> What are you working on?

Myself, mostly. Trying to wrestle with realizing how much time I've not been spending on my supposedly main project[1] and questioning whether it's really worth doing.

> Any new ideas that you're thinking about?

Way too many. Writing todo lists is part of working on myself.

[1]: PAPER, a pure-Python ~(pip/pipx replacement), from scratch with an emphasis on simplicity and elegance. https://github.com/zahlman/paper . There's more locally that I haven't pushed, including factoring some stuff out into a separate project and planning more of the same. But yeah.

christoph123 3 hours ago[1 more]

https://donethat.ai/profile/christoph

An AI based time tracker: reconstructs your day from whatever it sees you doing. Screenshot based but never stores them.

https://donethat.ai/data

The same tech stack is pretty easily adaptable to openclaw tracking. If anybody would like to try, DM

Also looking into AI based security tools for monitoring security of DoneThat. Thinking of using zeropath would love to hear if people tried them / have other suggestions

A_D_E_P_T 3 hours ago

I'm working to figure out new auxetic geometries for 3D lattices. The arrowhead is cool and simple, and gyroids are very effective, but I'm trying to discover if there's something simple, printable, and maximally effective. Tough problem. There's no general theory for auxetic lattices, so it's a matter of reasoning from the desired mechanism to find patterns that fit, almost like alchemical trial-and-error.

sakamotosan 2 hours ago

VERDURE is still a creative plant-generation sandbox where you grow and sculpt stylized trees.

https://store.steampowered.com/app/4069810/VERDURE/

slig 2 hours ago

Puzzleship - https://www.puzzleship.com/

It's a daily puzzles website focused on logic puzzles at this moment. I have about 70 subscribers, and it's online since Dec/25.

aleda145 3 hours ago

https://kavla.dev/

It's an infinite canvas that runs SQL.

I've been working with data my entire career. I feel like we need to alt+tab so much. What if we just put it all on a canvas?

Currently very WIP, but there's a simple titanic demo available!

Built with tldraw and duckdb wasm, running on cloudflare durable objects

jarl-ragnar an hour ago

Maritime vector charts for use in mapping applications https://marinecharts.io

Current coverage is the US, more countries coming soon.

junaid_97 3 hours ago

I'm building a free alternative to SimpleCitizen (YC S16).

It's a free USCIS form-filling web-app(no Adobe required). USCIS forms still use XFA PDFs, which don’t let you edit in most browsers. Even with Adobe, fields break, and getting the signature is hard.

So I converted the PDF form into modern, browser-friendly web forms - and kept every field 1:1 with the original. You fill the form, submit it, and get the official USCIS PDF filled.

https://fillvisa.com/demo/

I found out simplecitizen offers a DIY plan for $529 (https://www.simplecitizen.com/pricing/)

So, a free (and local-only) version might be a good alternative

ebhn 3 hours ago

Working on new code review tooling specifically for reviewing your own branches/commits when you use an "AI Agent" to assist with writing code. It seems all of the tools people are building in this space attempt to automate away the review, but I want better tools for reviewing (and tracking tech debt) in the code I just generated locally. Will publish here soon

haidrali an hour ago

I'm working on tablr.io, a B2B SaaS to help companies convert customer feedback into actionable insights.

christoph123 3 hours ago

A substack for 80/20 life advice and behaviour change.

https://euzoia.substack.com

Full project: https://euzoia.org

Tried to be super low-tech: Notion, super.so, Spotify creators, riverside.

Now thinking of building an email-based agent for behaviour change accountability. Would love any pointers to good UX for email-based AI assistants.

zarathustra333 2 hours ago

afaik a blocker on making useful internal agents is connecting to data sources and then exposing that data to said agent

im building Satori to fix this -https://www.usesatori.sh/

would love feedback!

sfbapt 3 hours ago

https://sfbapt.com/routes.html

Lots of work left to do, but happy to have a working version up. It's an interactive map that currently shows all the routes and stops for SF Muni, BART, Caltrain, samTrans, and VTA. There are many more agencies (official and unofficial) in the bay, so I'll be adding those throughout the next few days as I sort out the data.

Finding the data and cleaning/normalizing it is a real pain, so if anyone knows a good place to find them (and normalize them), please do share