Projects from HN posts

What are folks working on?

1689 projects published

Solo AI RPG (Claude as DM)

This app is a solo AI RPG where Claude acts as Dungeon Master, running as a Claude Artifact. It is built on a world bible from the builder's D&D group's sessions 20 years ago, aiming to recreate the feel of those sessions and the players' absurdities as young 20-somethings so it can be shared with gaming buddies.

Builders @binarysolo

AI & automationGames

AI-designed 3D-printed toys

This project uses basic AI tools to design toys that can then be 3D printed, made for the builder's 4-year-old kid.

Builders @binarysolo

Hardware & DIYLifestyle & hobbies

AI infrastructure for e-commerce operations

This system is AI infrastructure for a small e-commerce business with a dozen team members that manages a couple dozen brands and sells on Amazon. It provides task tracking, project management, and a centralized customer knowledge database for running account-specific strategies.

Builders @binarysolo

AI & automationBusiness & financeProductivity

xv6 filesystem study and small kernel FS project

A personal study project revisiting the xv6 teaching operating system's filesystem, then studying other filesystems and the VFS virtual filesystem layer, with a possible goal of implementing a very small filesystem in kernel space as a hobby, explicitly unrelated to the author's work.

Builders @markus_zhang

Education

OC Renegades

E-commerce apparel brand selling graphic tees, hoodies, and other apparel with designs ranging from dry humor and self-deprecation to unapologetic nonconformity and occasional optimism. The storefront was built with custom designs and code that integrates internal databases with Shopify and Printful APIs.

Builders @weisnobody

Business & finance

WhoThatFace

Facial identification and recognition system that lets families and groups share training data to make it easier to assign faces to known people. Face assignment in a single location currently works, though clustering sometimes struggles to differentiate related family members. Planned phases include a non-technical interface for reviewing and assigning faces, a clear client/server split, and cross-platform client support.

Builders @weisnobody

AI & automation

Canada-focused contract analysis tool

A tool that analyzes contracts and EULAs, with an initial geographic focus on Canada, intended to help handle the volume of contract and EULA updates arriving by email.

Builders @edimaudo

Business & finance

Active Journal

This app is an augmented journaling tool that helps users understand and document how their mind works. It supports identifying personal thought and behavior patterns and then deciding to break or modify them, with an approach grounded in research.

Builders @jeffjohnwaters

Health & fitnessProductivity

Simple conversation-sharing chat app

A simple chat app that makes it easy to share conversations, used primarily with family (parents) and for personal use.

Builders @iamhiro

Community & civic

Docs-as-Code Portfolio Sample

This is a docs-as-code portfolio sample being built while learning information architecture, with a case study planned to be written upon completion.

Builders @adelekeabdulgan

Developer tools

ChatFrom.io

This is an AI chatbot provider where users upload their knowledge base and it uses advanced RAG with hybrid search and reranking to find answers to questions. It connects to Stripe, Shopify, and other tools, and works on Telegram, Slack, and more, with a free tier to start.

Builders @JustRouzbeh

AI & automationBusiness & finance

Scorchball TV

A 24/7 live sports channel simulated in pixel art, built as a hobby project with Claude Code. It runs as a static site with no server: every viewer's browser simulates the same league from a published daily seed, so everyone watching sees the same broadcast at the same time.

Builders @scorchball

Creative tools & mediaGames

Eurotrucker smart-bike mod

A half-built Euro Truck Simulator mod that uses the smart exercise bike as a control interface, started for similar game-plus-bike vibes. A comfortable steering input method was never worked out, and handlebar-button steering was rejected out of concern it would build dangerous muscle memory on a real bike.

Builders @gabriel666smith

Games

Ferrite

Native Markdown editor built in Rust with egui that also handles JSON, YAML, TOML and CSV. Offers raw, split and WYSIWYG modes, [[wikilinks]] with a backlinks panel, native Mermaid rendering, and Vim mode, while making no network calls and keeping large files light. Runs on Windows and Linux (Flathub, AUR, deb/rpm) with experimental macOS support, is MIT licensed, and all code is AI-generated with the author doing direction, testing and review.

Builders @OlaProis

Developer toolsProductivity

Organizational Assessment App

This app lets businesses run assessments to understand their organizational strengths and weaknesses and identify areas for improvement. It uses AI-generated code and compiles assessment results into reports.

Builders @fk202611

Business & finance

Twenty-year long-form writing website

A website publishing the author's writings accumulated over twenty years. AI systems have ingested the entire archive and summarize or rewrite the work, diverting readers, while the expectation that new writing will likewise be consumed discourages further writing. The site barely sustains the author.

Builders @DamnInteresting

Creative tools & media

Neural Network Go Bot in C

A Go-playing bot built on neural networks (MLPs) written in C. The project trains cohorts of small networks with 0–1 hidden layers, evolving later cohorts from the best-performing members while experimenting to find the best network shape. It connects to Gnu Go to score how the networks play, implements backpropagation from scratch, and runs entirely on CPU with well-laid-out, cache-friendly data structures, with possible future parallelization on a many-core server rather than GPUs.

Builders @godshatter

AI & automationGames

Interactive DSP learning site

An interactive digital signal processing learning site with hands-on examples, including a mod tracker, an acoustic modem, a synth playable with a MIDI keyboard, a tool to measure the Shannon capacity of a room, and demos of psychoacoustic effects like masking.

Builders @FLT8

Education

Interactive CPU learning site

An interactive learning site about CPUs, one of a set of interactive learning materials built on topics the author found interesting over the years.

Builders @FLT8

Education

Cribber

A daily puzzle game based on crib dragging, built as a side quest while the cryptography learning site was being developed.

Builders @FLT8

Games

MeshLive

Open-source app for voice/video calls and livestreaming over Bluetooth mesh without internet, with nearby phones relaying to extend range. Available on Android, iOS, macOS, and Windows, with live video working over BLE.

Builders @gptgautam1

Creative tools & mediaInfrastructure & hosting

Past Visiting Hours

A multiplayer horror game built with Godot and Blender, using Qwen3 TTS and AI-assisted tooling (Deepseek Flash with Pi) to rapidly prototype and iterate on gameplay. The game is available to wishlist on Steam, with a planned release price of around $5.

Builders @shieldcast

Games

Vantabill

A free, fully offline invoicing app that installs as a single binary on Linux, Windows, and macOS, letting users go from quote to receipt with simple clicks. Data lives outside the app via an abstracted data layer to avoid lock-in and avoid hosting on someone else's server.

Builders @codenius

Business & finance

MapBooksCRM

An offline, OSM-first CRM that maps out customers on a map, tracking customer details and payments within a defined area. Combines CRM and accounting functionality with stats for monthly and yearly performance, keeps data outside the app to avoid lock-in, and is planned to be sold as one-time licensed (pre-SaaS style) software.

Builders @codenius

Business & finance

Calm tile-matching iOS game

A basic, calm tile-matching game for iOS designed for winding down before bed. The first 15 minutes are playable, then a 6-hour break, with a reasonably-priced one-time purchase unlocking unlimited play. It serves as an experiment testing whether a shareware-style, no-monthly-subscription model can work today, with the goal of building a portfolio of small peaceful apps and games as a minor income stream.

Builders @tapvt

Games

Wherebox

A static maps API that returns an image of the requested location, accessible via URL request, API, or MCP.

Builders @agilek

Developer tools

skmtc

This API search engine crawls OpenAPI specs, converts them into documentation, and makes them searchable via RAG. It has over 17,000 APIs indexed so far.

Builders @dmitri1981

AI & automationDeveloper tools

Terrarium

A minimal secure microVM sandbox written in Rust for sandboxing agents. It is heavily inspired by libkrun but takes the mindset that the guest is always hostile, with security set up around that assumption.

Builders @cryi

Developer toolsSecurity & privacy

Axle

TypeScript-native open-source AI agent library that encapsulates the agent lifecycle: calling agent.send() handles all tool calls and returns Turns that can be rendered directly in React with a simple loop. It is portable across common model providers and protocols and can be used as a harness to test and play with newly released models. The 0.36 release adds a RemoteAgent interface for talking to a remote agent instance over RPC.

Builders @johncch

AI & automationDeveloper tools