David Sheldrick

slop-mop. An agentic programming tool for engineers who still care about the code

flue. The sandbox agent framework.

dario. Your Claude Pro/Max subscription in any tool — Cursor, Cline, Aider, Agent SDK — at subscription pricing, not per-token bills. One local endpoint that replays Claude Code's wire shape so your traffic stays in the subscription pool.

stash. Stash — persistent memory layer for AI agents. Episodes, facts, and working context stored in Postgres. MCP server included. Self-hosted, single binary, no cloud required.

gitoxide. An idiomatic, lean, fast & safe pure Rust implementation of Git

crank. The Just JavaScript UI Framework

revise. Rich text editing foundations for the web

pi. AI agent toolkit: unified LLM API, agent loop, TUI, coding agent CLI

openclaw. Your own personal AI assistant. Any OS. Any Platform. The lobster way. 🦞

fluent. The AI Language Learning Kit for Claude Code and others

gastown. Gas Town - multi-agent workspace manager

moonshine-js. Fast and accurate on-device speech-to-text for web pages and web applications.

d2ts. Differential Dataflow in TypeScript

hyperreadable. A more plain version of Atkinson Hyperlegible

durafetch-server. Download all Cloudflare durable object state to a local SQLite database.

liquid-glass-react. Apple's Liquid Glass effect for React

zx. A tool for writing better scripts

porffor. An ahead-of-time JavaScript compiler

stricli. Build complex CLIs with type safety and no dependencies

cloudflare-workers-unfurl. Unfurl URLs on Cloudflare Workers using the built-in HTMLRewriter API.

syncpack. Consistent dependency versions in large JavaScript Monorepos.

draw-a-ui. Draw a mockup and generate html for it

electric. The agent platform built on sync.

stlouis2023. LoFiUnconf in St Louis after Strange Loop

manypkg. ☔️ An umbrella for your monorepo

nanoevents. Simple and tiny (107 bytes) event emitter library for JavaScript

GulfOfMexico. perfect programming language

social-app. The Bluesky Social application for Web, iOS, and Android

turborepo-remote-cache. Open source implementation of the Turborepo custom remote cache server.

fast-glob. :rocket: It's a very fast and efficient glob library for Node.js

partykit. PartyKit simplifies developing multiplayer applications

crab. A community fork of a language named after a plant fungus. All of the memory-safe features you love, now with 100% less bureaucracy!

signia. Reactive signals that scale, by tldraw.

rafz. 💍 One loop to frame them all.

distsys-class. Class materials for a distributed systems lecture series

verdant. 🌿 Storage, sync & realtime for local-first web apps. Build an app in minutes, deploy as a static page, and add sync with a few lines.

mona-sans. Mona Sans, a variable font from GitHub

hubot-sans. Hubot Sans, a variable font from GitHub

tsx. ⚡️ TypeScript Execute | The easiest way to run TypeScript in Node.js

typehead. Refreshingly simple CLI for TypeScript packages.

bun. Incredibly fast JavaScript runtime, bundler, test runner, and package manager – all in one

flash-list. A better list for React Native

trpc. 🧙‍♀️ Move Fast and Break Nothing. End-to-end typesafe APIs made easy.

actual. A local-first personal finance app

lexical. Lexical is an extensible text editor framework that provides excellent reliability, accessibility and performance.

tldraw. Build infinite canvas apps in React with the tldraw SDK. World's best, top-most agent recommended #1 five star SDK.

immer-yjs. Combine immer & y.js

plur. Pluralize a word

react-native-skia. High-performance React Native Graphics using Skia

theatre. Motion design editor for the web

static-path. TypeScript

realtime. Broadcast, Presence, and Postgres Changes via WebSockets

replicache. Realtime Sync for Any Backend Stack

twoslash. You take some Shiki, add a hint of TypeScript compiler, and 🎉 incredible static code samples

react-native-template. A template for a new React Native project

why-did-you-render. why-did-you-render by Welldone Software monkey patches React to notify you about potentially avoidable re-renders. (Works with React Native as well.)

stacks. A set of components for building layouts in React Native. Powered by React Native Unistyles.

typehole. TypeScript development tool for Visual Studio Code that helps you automate creating the initial static typing for runtime values

vanilla-extract. Zero-runtime Stylesheets-in-TypeScript

react-native-wormhole. ⚛️ 🌌 Inter-dimensional Portals for React Native. 👽 🖖

git-notify. 🙉 📣 Communicate important updates to your team via git commit messages

leonsans. Leon Sans is a geometric sans-serif typeface made with code in 2019 by Jongmin Kim.

yabai. A tiling window manager for macOS based on binary space partitioning

xo. ❤️ JavaScript/TypeScript linter (ESLint wrapper) with great defaults

shellac. Coat your shell scripts in something a bit more beautiful

react-native-screens. Native navigation primitives for your React Native app.

dripsy. 🍷 Responsive, unstyled UI primitives for React Native + Web.

sade. Smooth (CLI) Operator 🎶

use-editable. A small React hook to turn elements into fully renderable & editable content surfaces, like code editors, using contenteditable (and magic)

skia-canvas. A multi-threaded, GPU-powered, 2D vector graphics environment for Node.js

openfpc. A 2D CAD tool built on React, Three.js, and Immutable

foam. A personal knowledge management and sharing system for VSCode

zod. TypeScript-first schema validation with static type inference

observe-rect. Observe the Rect of a DOM Element

MeetingBar. 🇺🇦 Your meetings at your fingertips in the macOS menu bar

solid. A declarative, efficient, and flexible JavaScript library for building user interfaces.

eigen. The Art World in Your Pocket or Your Trendy Tech Company's Tote, Artsy's mobile app.

cohesion. Artsy's analytics schema

kleur. The fastest Node.js library for formatting terminal text with ANSI colors~!

maza-ad-blocking. Simple, native and efficient local ad blocker. Only Bash.

react-native-circleci-orb. A CircleCI Orb to Simplify Testing your React Native App

lint-changed. Lint files that have changed since master

tools. Unified developer tools for JavaScript, TypeScript, and the web

easy-peasy. Vegetarian friendly state for React

cypress-file-upload. File upload testing made easy

linear-cli. TypeScript

use-immer. Use immer to drive state with a React hooks

dinoql. A customizable GraphQL style query language for interacting with JavaScript objects.

tsdx. Zero-config CLI for TypeScript package development

relay. Relay is a JavaScript framework for building data-driven React applications.

public-sans. A strong, neutral, principles-driven, open source typeface for text or display

996.ICU. Repo for counting stars and contributing. Press F to pay respect to glorious developers.

use-methods. A simpler way to useReducers

fretboard-trainer. Memorize the guitar fretboard quickly

ink. 🌈 React for interactive command-line apps

pull-lock. Run commands based on changes during a git pull

allcontributors.org. ✨ The all-contributors bot website and documentation. Recognize all contributors, not just the ones who push code ✨

berry. 📦🐈 Active development trunk for Yarn ⚒

quirk. ✨🐙 A GPL Licensed Cognitive Behavioral Therapy app for iOS and Android. Currently a teaching tool

js-function-reflector. Function Reflection in Javascript With Support for ES2015+ Syntax

devhub. TweetDeck for GitHub - Filter Issues, Activities & Notifications - Web, Mobile & Desktop with 99% code sharing between them

NaNoWriMo. Wallet - A Novel for National Novel Writing Month 2018

croc. Easily and securely send things from one computer to another :crocodile: :package:

found-scroll. Scroll management for found

palette. Artsy's design system

skip. A programming language to skip the things you have already computed

You-Dont-Need-Momentjs. List of functions which you can use to replace moment.js + ESLint Plugin

README. :wave: - The documentation for being an Artsy Engineer

rebass. :atom_symbol: React primitive UI components built with styled-system.

feel-good. A simple task and time-tracker to make you feel good about yourself.

zoom-launcher. A command line tool for joining your next Zoom meeting.

reaction. Artsy's publishing components

danger-js. ⚠️ Stop saying "you forgot to …" in code review

termtosvg. Record terminal sessions as SVG animations

use-yarn. Force users to use yarn instead of npm.

core-js. Standard Library

Carp. A statically typed lisp, without a GC, for real-time applications.

pollyjs. Record, Replay, and Stub HTTP Interactions.

react-spring. ✌️ A spring physics based React animation library

level. Team communication optimized for deep work

deno. A modern runtime for JavaScript and TypeScript.

react-native-template-typescript. 👾 Clean and minimalist React Native template for a quick start with TypeScript.

bey. Simple immutable state for React using Immer

immer. Create the next immutable state by mutating the current one

TypeScript-React-Starter. A starter template for TypeScript and React with a detailed README describing how to use the two together.

spectrum. Simple, powerful online communities.

react-native-dom. An experimental, comprehensive port of React Native to the web.

fuse-box. A blazing fast js bundler/loader with a comprehensive API :fire:

ttypescript. Over TypeScript tool to use custom transformers in the tsconfig.json

isomorphic-git. A pure JavaScript implementation of git for node and browsers!

lynt. ✨ A zero config JavaScript linter with support for Typescript, Flow, and React.

redux-atomic. Give Those Typing Hands A Break

build-your-own-x. Master programming by recreating your favorite technologies from scratch.

react-a11y. Identifies accessibility issues in your React.js elements

duckling. Language, engine, and tooling for expressing, testing, and evaluating composable language rules on input strings.

theredoc. Makes your multi-line JavaScript strings look good

ow. Function argument validation for humans

outline. The fastest knowledge base for growing teams. Beautiful, realtime collaborative, feature packed, and markdown compatible.

polacode. 📸 Polaroid for your code

Kaleidoscope. Firmware for Keyboardio keyboards and other keyboards with AVR or ARM MCUs.

kanban-app. Kanban board built with Rust and Elm

TypeScript-React-Native-Starter. A starter template for TypeScript and React Native with a detailed README describing how to use the two together.

react-copy-write. ✍️ Immutable state with a mutable API

govern. Component-based state management for JavaScript.

formik. Build forms in React, without the tears 😭

flow-to-typescript. Convert Flow-annotated files to TypeScript

nebulet. A proof-of-concept microkernel that implements a WebAssembly "usermode" that runs in Ring 0.

prettier. Prettier is an opinionated code formatter.

madge. Create graphs from your CommonJS, AMD or ES6 module dependencies

jsdiff. A javascript text differencing implementation.

phoenix. A lightweight macOS window and app manager scriptable with JavaScript

nice-package. Validates and fixes properties in package.json

gron. Make JSON greppable!

consola. 🐨 Elegant Console Logger for Node.js and Browser

react-powerplug. :electric_plug: Renderless Containers

figma-graphql. The reimagined Figma API (super)powered by GraphQL

typescript-starter. Quickly create and configure a new library or Node.js project

figma-js. Little wrapper (+ types) for the Figma API

popmotion. Simple animation libraries for delightful user interfaces

thanks. 🙌 Give thanks to the open source maintainers you depend on! ✨

is-thirteen. Check if a number is equal to 13.

wonka. 🎩 A tiny but capable push & pull stream library for TypeScript and Flow

driver.js. A lightweight, dependency-free JavaScript library for guiding user focus across the page.

prevent-smoosh. Don't let TC39 use smoosh or smooshMap

computed-async-mobx. Define a computed by returning a Promise

callbag. 👜 A standard for JS callbacks that enables lightweight observables and iterables

diff-so-fancy. Make your diffs human readable for improved code quality and faster defect detection. :tada:

faceswap. Deepfakes Software For All

unionize. Boilerplate-free functional sum types in TypeScript

pixelmatch. The smallest, simplest and fastest JavaScript pixel-level image comparison library

glow. Make your Flow errors GLOW

urql. The highly customizable and versatile GraphQL client with which you add on features like normalized caching as you grow.

type-o-rama. 👾 JS type systems interportability

fastpack. Pack JS code fast & easy

stacker. 🥞 Chrome extension for managing stacked pull requests

workerize. 🏗️ Run a module in a Web Worker.

ricochet-robots. An intrepid foray into Purescript

emotion. 👩‍🎤 CSS-in-JS library designed for high performance style composition

sweetsour. A CSS-in-JS parser and pipeline adhering to the ISTF spec 🍭

majestic. ⚡ Zero config GUI for Jest

nuka-carousel. Small, fast, and accessibility-first React carousel library with an easily customizable UI and behavior to fit your brand and site.

react-slick. React carousel component

react-native-typography. Pixel–perfect, native–looking typographic styles for React Native ✒️

scrollama. Scrollytelling with IntersectionObserver.

substyle. Build reusable React components that can be styled with css, css modules, inline styles & many css-in-js libs

react-show. ⚛️ A 3kb css animation component for React.

nanoanimation. 👨‍🎨 - Safety wrapper around the Web Animation API

stryker-js. Mutation testing for JavaScript and friends

nyxt. Nyxt - the hacker's browser.

it-is-the-egg. Puzzle game thing with an egg

react-native-app-auth. React native bridge for AppAuth - an SDK for communicating with OAuth2 providers

awesome-diversity. A curated list of amazingly awesome articles, websites and resources about diversity in technology.

Lona. A tool for defining design systems and using them to generate cross-platform UI code, Sketch files, and other artifacts.

chokidar-cli. Fast cross-platform cli utility to watch file system changes

lottie-web. Render After Effects animations natively on Web, Android and iOS, and React Native. http://airbnb.io/lottie/

primitive. Reproducing images with geometric primitives.

redux-isolated-apps. Fragments / micro-frontends / reusable components with redux logic

levelup. Superseded by abstract-level. A wrapper for abstract-leveldown compliant stores, for Node.js and browsers.

react-flip-move. Effortless animation between DOM changes (eg. list reordering) using the FLIP technique.

rxjs-spy. A debugging library for RxJS