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Projects from HN posts

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1689 projects published

P2Predict

This parametric pricing tool for procurement and sales learns from a company's purchase history which factors actually drive a part's price (supplier, material, spec, region), and lets an AI agent ask whether a quote is fair, returning a price estimate with a confidence range and a spec-by-spec breakdown. Use cases include data-driven negotiation targets, engineering value workshops (estimating BOM savings from spec changes), and sales bid preparation. It runs as a CLI, ships an MCP server so it plugs into Claude, GPT, or other agent harnesses, and works 100% locally and privately; it is free for internal company use and source-available. The author also validated its math on public TDC ADMET pharma benchmarks (placing 7th of 24 on one board) and used it to predict rent savings when moving apartments.

Builders @ahmedkhafsi

AI & automationBusiness & financeData & analytics

Combined workout + calorie tracker app

This app combines workout tracking and calorie tracking into a single app, aiming to make logging as seamless as possible with minimal tapping or thinking. It is currently being built for personal use, with a possible public release if others have the same need.

Builders @pprotas

Health & fitness

k3d local development environment with ArgoCD sync

A local development environment that mirrors a Kubernetes production setup by running everything locally on k3d, with manifests synced via ArgoCD. It addresses the mismatch between a separate local Docker Compose setup and Kubernetes in production, making it possible to work on Kubernetes-specific concerns like ingress and network policies locally. The setup is planned to be packaged as a documented justfile.

Builders @bowersbros

Developer toolsInfrastructure & hosting

HeyCheero

HeyCheero is an AI work journaling chat that helps users capture the right level of detail and build recaps, making it easy to look back before 1-on-1s and performance reviews. The app features a squirrel mascot named Cheero who serves as the companion's personality.

Builders @kapimalos

AI & automationProductivity

Mossy

This Mac app displays a little plant in the corner of the screen that wilts when the user doesn't take breaks, encouraging regular rest during computer work.

Builders @albanbertolini

Health & fitness

Datapoint Watchlist

This app provides a watchlist for tracking any kind of datapoint over time — stocks, weather, air quality, macro indicators, and more — so users can keep one watchlist for all the different numbers they're interested in. It supports followup comparisons with peers or with past values.

Builders @vwake

Data & analyticsProductivity

Cafegrinds

A hyperlocal social app that invites people to work together in person, letting remote workers meet publicly in work settings and connect professionally or personally over repeated sessions, with groups capped at three people for more intimate conversations. Currently free and available only in Bangalore.

Builders @achie27

Community & civic

RunCoach

Running coaching app that generates adaptive training plans and structured workouts (splits, pace targets, reps) and sends them to a Garmin watch, using an intervals.icu account. A generated plan was validated by completing a first 22 km trail race with over 1100 m of elevation; the app is intended to replace a paid running app subscription.

Builders @brunooliv

Health & fitness

Release Flow Automation

This project automates the release flow, targeting the gap where AI agents and code-writing harnesses have made creating PRs and writing code cheap, but code review remains slow and difficult.

Builders @nitinmindlap

AI & automationDeveloper tools

Swirl Together

An expanded, collaborative version of the popular GLSL fluid sim shader, featuring playful multiplayer/collaborative elements, currently in playtesting ahead of a free demo release on Steam during Next Fest.

Builders @Gabriel_Martin

Creative tools & mediaGames

GhanaHousePlanner

A construction operating system built for Ghana that supports house projects through 7 entry points, covering users who start from just a house idea, those with an existing house plan, and those already building who only want to manage their build. The platform helps users complete their house projects by bringing on board experts such as supervisors, architects, tradesmen, land registration services, and material suppliers (e.g., Marani, a MEP expert), and is expanding French language support so it can be licensed for use in other African countries.

Builders @ggap

Business & financeProductivity

you coming

A lowkey hangout app for iOS and Android designed around hanging out rather than chatting or engagement with strangers. Users add friends, acquaintances, and new contacts, throw out plan ideas (even without a time or place at first), and add bucket-list items to their profile. Others can opt in, settle on a time, or pitch a plan everyone can vote on. Group chat only opens once people, time, and place are set, and self-destructs after the event. Events can also be shared with RSVP collection for people off-app. The author plans to launch curated events in London.

Builders @nabramow

Community & civic

gpu-time

A WebGPU-based model that parses natural English date and time expressions, with plans to add support for additional languages.

Builders @arikchakma

AI & automationDeveloper tools

Pump.Fun/Solana trading bot

This is an automated trading bot for Pump.Fun/Solana that targets ultra-low-quality meme coins, built around an identified edge that exploits Pump's bonding curve. The author previously profited using the strategy through manual trading and is now automating it. The project also serves as a hands-on example for learning spec-driven development, iterating the spec in Claude Code with adversarial models.

Builders @iafiaf

AI & automationBusiness & finance

NavigateAnyMap

Android app that lets users navigate using a photo of any physical map. It georeferences ('fixes') the photo onto an OpenStreetMap.org background using Exif information, so the fixed photo is mapped to GPS coordinates and can be shared.

Builders @plank

Lifestyle & hobbies

LokalBot

Open-source Mac app that transcribes meetings and can save screen context so it can be searched later. Runs locally by default, using Qwen LLMs as the main engine.

Builders @stevyhacker

AI & automationProductivity

Agent Trace ETL Layer

An ETL layer for agent traces that extracts and processes the trace data generated by AI agents so it can be used to improve agents and models, track costs, and learn user behaviour.

Builders @manojbajaj95

AI & automationData & analytics

ClockStack

This YouTube channel streams live analog clocks for four regions (USA, Europe, India, EastAsia) around the clock, 24/7, currently in FullHD with plans to upgrade to 4K if it gains popularity.

Builders @ramshanker

Creative tools & media

OpenMausBot

OpenMausBot is an open source AI bot alternative to Grok-Bot that works with users' existing subscriptions via ACP, supports self-hosting on a VPS, and connects to cloud or local virtual computers.

Builders @milindsoni201

AI & automation

Tricot

A 3D pixel art tool for painting pixel art directly onto low poly 3D models. Supports FBX import and export, and a save system with a version control feature is in development.

Builders @caporaltito

Creative tools & media

Top of the Round (D&D combat tracker)

A Dungeons & Dragons combat tracker web app. Its latest feature lets users share custom monsters with the community so others can use them in their own encounters.

Builders @kristophph

Games

RandomHowl

A randomizer for the game Death Howl that adds variety to custom mode for players who have finished challenge runs and want fresh ways to replay.

Builders @__s

Games

Drunk Woodcutter

A game combining chopping firewood and drinking beer, with a demo launched on Steam.

Builders @ElSchorschoDE

Games

Public Job Exam Study App

An app for studying for public job exams in a specific territory. It aggregates questions from past exams that are made public afterwards into a question database, and offers several test types: per-topic tests, a real exam simulacrum, and an algorithm that tells the user what to study. The app's foundation is currently being rebuilt.

Builders @plagasul

Education

lupine

This project is a GPU over IP bridge that enables GPUs to be accessed over a network.

Builders @kevmo314

Infrastructure & hosting

Booktunes

This app generates looping music and soundscapes matched to the feel of the chapter of a book the reader is in. Its long-term goal is a video-game-style adaptive music engine that reacts to where you are in a book instead of a game environment, e.g. battle music during fight scenes, calm background music, or matching forest ambience. It is free and requires no sign-in.

Builders @marefesk

AI & automationCreative tools & media

chromonic

A web browser written in Python, built on the domonic library. Development is currently focused on running agents against web-platform-tests conformance suites (starting with the CSS2 layout tests) to run the tests, fix layout issues, and log domonic-related issues in PLAN.md.

Builders @byteface

Developer tools

Haskell miso app boilerplate

A Haskell (miso) app boilerplate setup built deliberately without generative AI, developed to form stronger opinions about how the frontend could be different and to learn techniques applicable to Next.js apps at work.

Builders @hewwwww

Developer tools

Epub Translator

This tool translates EPUB ebooks, dealing with the fragmented epub format through custom parsing to support the many varying epub file structures.

Builders @xiaoape

Creative tools & mediaProductivity

Simplesend

A simple PHP HTML page for shared server hosting that lets mom-and-pop bloggers send messages, with a limit of 500 sends per day.

Builders @achillesheels

Productivity