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

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871–880 of 1001 posts

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

#871
A data generator and visual data modeler for any database. It's been fun, learned a LOT about generating data in a very specific order to maintain referential integrity, even more about how to determine that order! Generates > 100K rows a second for simple generation, or ~10K rows a second for derived / child rows.

https://app.synthforge.io to login (FREE!) or https://synthforge.io to learn more

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

#872

I've been building a loyalty/membership product for small businesses. My co-founder owns an ice cream shop and complained about how awful the existing products in this space, so we decided to build something better. No apps to download, Apple/Google wallet integration, and really cool analytics for the merchant. https://chckn.app/

Nice work! My local coffee shop uses square but I for some reason never redeem the stars, my wine shop has a physical punch card that I sometimes forget in my wallet when going. Seems like there’s room for experimentation in the area.

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

#874
post #865

10Cups. We pretty much all buy the same type of coffee, every time. So I added a simple NFC reader to the barista's Kitchen Display. You buy ten cups of coffee, they give you a NFC sticker for your travel mug. Tomorrow, you skip the queue, hand the barista your travel mug. They tap it on the reader, see how you like your coffee, and redeem one. Makes your regular's lives easier, and you take regulars out of your queu…

I don't drink coffee, but this is such a great implementation of simple tec.

Well done.

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

#875
Axiomos Decide – A ROI simulator for AI infrastructure (Cloud vs. On-prem)

I’m building a tool to help teams decide if they should keep burning cash on AWS/GCP or buy their own GPU clusters.

It takes real workload parameters (tokens/sec, model size, duty cycle) and models throughput/utilization to find the break-even point. The core diagnostic is free, and I generate a board-ready PDF report for $99 to help justify the CapEx/OpEx switch to CFOs.

Building this solo from Switzerland. I’d love to hear from anyone dealing with "cloud exit" for AI or struggling with GPU cost projections.

URL: https://axiomos.ai/decide

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

#877
https://github.com/rustledger/rustledger I'm building a Rust implementation of Beancount, the double-entry bookkeeping language. It covers the full Beancount syntax, all the booking methods, a BQL query engine, plugins (including rust and python). It works as both a CLI tool and a Rust library, and it compiles to WebAssembly too.

https://github.com/rustledger/rustfava This is a fork of Fava, the web UI that Beancount users know and love, but with the Python parser swapped out for rustledger running as WebAssembly. I packaged it up as a native desktop app using Tauri, so you just double-click to open your ledger files with no terminal or Python needed. It also works via Docker, PyPI, and Nix if that's more your thing.

https://github.com/rustledger/pta-standards I started this project to create proper formal specifications for plain text accounting formats, covering Beancount, Ledger, and hledger. It includes EBNF/ABNF grammars, JSON Schema and Protobuf AST definitions, tree-sitter grammars, Alloy models for invariants, and conformance test suites. The idea is to make it possible for anyone to build a correct, interoperable PTA implementation without reverse-engineering existing tools.

https://github.com/robcohen/peervault This is an Obsidian plugin that lets you sync your vaults directly between your devices over P2P connections, no central server involved. Has S3 fallback if you want. It uses Loro CRDTs so concurrent edits merge cleanly, and Iroh compiled to WASM handles the networking with NAT traversal and end-to-end encryption. Until iroh-docs or iroh-willow comes out with WASM support, this seems to be the best solution for obsidian syncing.

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

#878

https://sampler.meiji.industries/ I built a TUI sampler which cherry-picks my favourite features from modern & vintage hardware samplers, DAWs, plugins, outboard FX gear, and DJ equipment. If you know what an AKAI MPC Live, MPC 3000, SP404, SP1200, BOSS RC-202, Alesis 3630, Serato Sample, S950 filters, and stem separation does, then you'll love seeing these "greatest hits" up in a terminal interface. Last year while…

Adam, this is amazing!

10/10

It does what is says it does, zero friction.

Beautiful UI, I make some music from time to time, this is something I will definitely use.

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

#880
The Drug App - a CAD for drug design.

It's focused on structural analysis right now, but the goal is to allow for biologists, crystallographers, chemists, etc to quickly analyze large samples of structural data for patterns and find where those patterns break down.

Our goal is to make it a platform to analyze the output of various papers, tools, and structures to build a single unified biological model of your druggable target. For example, what if your alphafold output disagrees with pre-existing literature? If Diffdock says your candidate can bind to a pocket on a protein that hasn't been validated yet, what's the implications of that on the underlying biological mechanism?

Biology is extremely complicated, so scientists create simplified lenses of the world to make sense of things. Biologists are looking at different things than crystallographers, crystallographers are looking at different things than computational chemists, etc, etc.

Finding disagreements in these simplified lenses early can save a lot of money before things move to lab experiments.

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