lucas gelfond

A 5-20x faster experimental Homebrew alternative

Zerobrew is a faster drop-in replacement for Homebrew on macOS and Linux that installs command-line software up to 7.6x faster using content-addressable storage and APFS clonefiles.

Segment Anything 2, 100% in the browser (with WebGPU!)

exiftool (OSINT image metadata utility) in the browser (via WebAssembly!)

Let AI agents run research experiments + train small language models (in your browser!)

A searchable (vector + FTS) index of every issue of the Whole Earth Catalog

Logical replication to keep Postgres entities updated in Turbopuffer

No description.

An (unofficial) modern Rust client for Turbopuffer

Live at http://lucasgelfond.online

An easy arduino POV display.

A polyglot document intelligence framework with a Rust core. Extract text, metadata, and structured information from PDFs, Office documents, images, and 50+ formats. Available for Rust, Python, Ruby, Go, and TypeScript/Node.js—or use via CLI, REST API, or MCP server.

Repo for lucasgelfond.online, mostly plaintext single-page personal site, built to play with Svelte.

Parametric 3D model of Berghain (in progress!)

A DIY, simple, fairly feature heavy composting toilet.

No description.

Middleman-free music service; listens for transactions of an ERC-20 token on-chain before serving files to users. Final project for 2021 ETH Summer by Brandon Wang and Lucas Gelfond.

A list of microgrant programs for your good ideas

AI agents running research on single-GPU nanochat training automatically

Webapp that takes two last.fm usernames and finds the songs most listened to by both users

Repo for "Intro to Programmatic 3D Modeling" workshop for 2025 Fidget Camp (https://fidgetcamp.com/)

No description.

Scrubbing and frame capture logic using ffmpeg and ffprobe

React application using Segment Anything in browser

A minimal production-ready node HTTP server with express and typescript

Parametric and Open Source Dollar Bill Frame

A 3D Model to add useful hooks to your door hinges

I was building my multicopter and I wanted the new holes I was drilling in the frame to be perfectly centered. So, I designed the fully parametric hole drilling guide. Enjoy.

Restrictions for vehicles in the US.

Source repo for Docker's Documentation

Project for my Brown University HIAA 0850 (Modern Architecture) course!

Small React app to convert the scrobbler.log files produced by Rockbox into Universal Scrobbler readable CSV. Works but deprecated because I found logScrobbler (https://khejit.github.io/logScrobbler/#/logged) while building which works better.

My personal website.

No description.

Hang skateboards on your wall!

A FULLY parametric box with user-adjustible holes and user-adjustible number of holes.

A parametric mounting plate, compatible with GoPro. Use this to mount your camera to your multicopter.

A fully parametric OpenSCAD battery carriage for people who need to mount both their battery and FC on a single size and in the same mounting holes.

A boilerplate for the freeCodeCamp curriculum.

Drop your ens twitter thread -> actual airdrop online tool

Render React child components as an image.

🏗 forkable Ethereum dev stack focused on fast product iterations

No description.

(Mac) Vim configuration

No description.

Downloads songs from your Spotify Playlist

No description.

🍻 Default formulae for the missing package manager for macOS (or Linux)

No description.

Uses Convex to mirror discord into slack

A course of learning LLM inference serving on Apple Silicon for systems engineers: build a tiny vLLM + Qwen.

No description.

No description.

No description.

An unofficial Rust library for the OpenAI API

Perl5 in a sandboxed, self-contained WebAssembly module.

An experimental bytecode interpreter / type-checker for type-level Typescript

No description.

one summary of diffusion-based image processing, including restoration, enhancement, coding, quality assessment

A PoC to run Segment Anything Model (SAM) entirely in the browser without any backend

Easy, fast and WASM/WebGPU accelerated vector embedding for the web platform. Locally and via API. Compatible with Browsers, Workers, Web Extensions, Node.js & co.

No description.

Basic luminance matching demo

No description.

A simple framework for experimenting with Reinforcement Learning in Python.

No description.

CSCI 2390 assignment stencil code

Find out what artists/albums/tracks two last.fm users have in common

Golang server and frontend applications to visualise an mtriage folder structure

list of projects and implementations in the AT protocol ecosystem

Make results from mtriage available via a simple API

framework to orchestrate the download and analysis of media

Graphite's CLI makes creating and submitting stacked changes easy.

No description.

No description.