1689 projects published
A browser-based puzzle game inspired by Trainyard, an iOS puzzle game that stopped receiving updates and is no longer on the App Store. Rather than a direct clone, it offers a similar-but-distinct puzzle experience, ships with a base pack of puzzles, and lets players export puzzles they design and submit them for inclusion in the base pack.
LumifyHub, a web project shared only by its domain name; the comment provides no details about its features, goals, or purpose.
A custom portable X11 desktop environment built from POSIX shell and C, replacing nearly every stock component—menu, bar, window manager, and hotkey daemon (terminal kept to avoid carrying terminfo)—so the pieces run independently on Linux and BSD. AI assistance is used to write the components quickly, with the goal of a stable environment that functions as intended forever and can't be disrupted by upstream developer changes.
This IDE is built around the author's workflow and supports multiple AI agent harnesses (e.g. Claude Code, Codex, pi, opencode), makes git worktrees much easier to work with, and includes its own code review workflow. It is used by the author's coworkers and friends and has increased their productivity compared to VS Code, Zed, or Cursor.
A website that keeps U.S. car owners informed about vehicle issues that car makers communicate to dealerships, offering a better experience than the NHTSA's website for finding these communications.
A personal operating system kernel project that plays the 'Bad Apple!!' animation on the author's own kernel.
A language model and inference engine implemented entirely from scratch.
A sketch-practice web app in the style of sketchdaily.net, but instead of the site's preselected references it uses a Pinterest board of references supplied by the user.
This app is a bilingual (EN/ZH) signal radar that reads official and first-party feeds directly (Federal Reserve, SEC, ECB, DOJ, CFTC, ArXiv, GitHub releases, GDELT), clusters duplicate coverage into a single event card, and measures how far ahead of mainstream coverage each signal lands. Every card links back to the original source with no full-text republication, and lead-time stats accumulate into a monthly index.
A daily country-guessing game built to teach players about the world as they play. It uses Wikipedia and factbook.json for country information and incorporates several original game ideas the creators plan to keep experimenting with.
Self-hosted database access management tool that provides code-review-style approval workflows for SQL statements before they run in production. Includes a Postgres proxy and a MySQL wire proxy so developers can keep using psql or DataGrip while every statement is logged, with SSO support and no password sharing.
An expedition weather app that delivers detailed weather forecasts over low-bandwidth satellite messengers such as Garmin inReach, ZOLEO, and iPhone satellite messaging. It uses an rANS entropy coder fitted on historical weather forecasts to compress about 100 time periods (~4 days of hourly data) into a 160-character message using just a couple bits per variable on average.
A self-hosted, almost feature-complete alternative to Discord for running chat communities.
A white-label RAG API that powers better, more tailored AI features in SaaS products. It indexes customer websites by default and also supports Notion, YouTube, email, and custom connections as data sources.
A refreshed consulting webpage used to restart a DevOps, infrastructure, and fractional consulting business.
A small side project built on top of the XMPP protocol; the specific idea and features are not described.
A stair lift for a Roomba robot vacuum that fits into a small box and can be retrofitted onto any stairs, letting the vacuum travel between floors on its own. It also carries laundry up and down the stairs.
A web-based natural language calculator similar to Soulver, supporting multiple languages and an AI mode. It can generate a small notebook from a problem description using AI, while the actual calculations run on a deterministic engine; collaboration features are currently in development.
A platform for studying when healthcare AI agents are wrong and when they should refuse to answer (judgement). It generates synthetic healthcare claims — utilization and case mix drawn from published data, priced using real fee schedules and contract terms, with differing payer behaviors — and plants errors on purpose so a correct answer exists before any model runs. On top of the data it builds benchmarks for overreach, refusal, errors by record type, and detection time, plus small MCP tools that refuse when evidence is missing, with every number including its source, date, and basis.
An Apache-2.0 licensed open-source MCP plugin, part of Hammer Labs' suite of small MCP tools that refuse to answer when evidence is missing.
A free map-based tool for exploring electricity and natural gas costs across the US. Users can compare states, follow prices over time, and examine bills and energy burden, making energy affordability data easier to access and understand.
A web tool for exploring location demographics on a map: draw an area or select a travel time around a location to view its population, income, housing, and nearby businesses, including daytime versus nighttime population to gauge who is around a potential store or restaurant during business hours.
This platform aggregates foreclosure auction data across the US. It pulls from 20+ sources, normalizes records from county sites and auction platforms, deduplicates properties, and enriches them with property/location data, with ongoing work on data freshness and coverage.
The Jane Street protocol emulator ASIC competition, a hardware-adjacent challenge the author is considering picking up as a potential next project, noting that although they are not really a hardware person it may be within reach.
A micro ecommerce app that lets the builder's daughter sell her butter to family and friends, with no payments or shipping involved.
A PWA that helps people be the barista at home and take free online orders from friends and family.
An app for local libraries that creates public display interfaces for showcasing their events.
This platform runs clubs that teach kids to code and hand-draw their own computer games, currently piloted in schools. Its main experience lets kids build and play their own RPG in the browser on school iPads, built on a fork of the Godot engine tuned for constrained browser devices. It also streams games directly to iPads, including a modded version of Overcooked! 2 that teaches kids to code, delivered via a custom Kubernetes system that spins up game pods on demand backed by time-sliced NVIDIA GPUs, using Cloudflare's TURN relay over TCP since UDP is blocked on school networks.
Open-source, self-hosted revenue recognition and analytics tool for Stripe, described as the first open-source revenue analytics option for Stripe. Built by a former Stripe engineer who worked on revenue recognition and analytics there.
This is a self-hosted, FOSS platform that turns a Kubernetes cluster into a Heroku-like experience, making it easy for developers to deploy and host small projects. It has grown to roughly 2,000 active developers and is built in Rails + Stimulus.