Adam Duncan

codiff. a fast local diff viewer

emdash. EmDash is a full-stack TypeScript CMS based on Astro; the spiritual successor to WordPress

skills. Skills for Real Engineers. Straight from my .claude directory.

varlock. AI-safe .env files: Schemas for agents, Secrets for humans.

formisch. The lightweight, schema-first, and fully type-safe form library for React, Solid, Vue, Svelte and more.

greenwood. Greenwood is your workbench for the web, embracing web standards from the ground up to empower your stack from front to back.

itty.dev. Documentation for itty ecosystem.

ripple. the elegant TypeScript UI framework

hmpl. 🐜 HMPL.js is a lightweight server-oriented template language for JavaScript. Fetch HTML, render it safely, and keep apps dynamic, modern, and small.

kelp. A UI library for people who love HTML, powered by modern CSS and Web Components.

rfcs. Repo for managing Requests For Comments (RFCs) for the ESLint project

fluent-state. Fluent, reactive & immutable local state management for React.

growfield. A tiny, dependency-free JavaScript module for making textarea elements grow with their content.

zshy. 🐒 Bundler-free build tool for TypeScript libraries. Powered by tsc.

error. Minimal, type-safe error-as-values library for JS

eleventy-libdoc. An Eleventy starter project to craft slick documentation

github-mcp-server. GitHub's official MCP Server

line-numbers. A web component to add line numbers next to various HTML elements

smooothy. Astro

rockpack. Zero-config React with built-in SSR, automated quality gates, and AI-ready project structure - ship clean code whether you write it yourself or with an AI assistant.

cap. Free, open-source and self-hosted CAPTCHA alternative to reCAPTCHA. Privacy-first and powered by proof-of-work and instrumentation challenges.

basecoat. A components library built with Tailwind CSS that works with any web stack.

Sink. ⚡ A Simple / Speedy / Secure Link Shortener with Analytics, 100% run on Cloudflare.

draggable-slider. Created with StackBlitz ⚡️

track-list. Enhance a list of audio tracks with playlist controls

spectacle. A React-based library for creating sleek presentations using JSX syntax that gives you the ability to live demo your code.

convex-backend. The open-source reactive database for app developers

react-flow. A React Coverflow component using Scroll-driven Animations

up-fetch. Advanced fetch client builder

Pearcleaner. A free, source-available and fair-code licensed mac app cleaner

playwright-mcp. Playwright MCP server

custom-module-demo. HTML

frimousse. A lightweight, unstyled, and composable emoji picker for React.

extract-colors. Pulls the most common colors out of an image

image-color. Small utility to efficiently fetch the colors from an image.

scroll-snap. ↯ Snap page when user stops scrolling, with a customizable configuration and a consistent cross browser behaviour

SCALES-Design-Tokens-Starter-Set. Design tokens starter set for your design system

fullsoak. a no-build TypeScript fullstack SSR-first framework for developing fast web applications with a shallow learning curve

rrv7-markdown-static-website. TypeScript

waveform-renderer. TypeScript

triptych. HTTP Buttons, PUT/DELETE Forms, and Partial Page Replacement - three proposals for the HTML standard

bunchee. Zero config bundler for npm packages

squish. Squish - Batch Browser-based Image Compression

mentoss. The best way to mock JavaScript fetch requests

decap-cms. A Git-based CMS for Static Site Generators

ui. A CSS UI library exploring how next-gen HTML & CSS features can change the way we create components. Designed to be used by professional teams as well as tinkering hobbyists.

principles-of-web-accessibility. How to approach accessible web interface design

boardgame.io. State Management and Multiplayer Networking for Turn-Based Games

base-ui. Unstyled UI components for building accessible web apps and design systems. From the creators of Radix, Floating UI, and Material UI.

crosspost. A JavaScript utility for posting across multiple social networks at once

manifest. Connect Your Agents And Harnesses With Any Provider 🦚

react-scan. Scan and fix React performance issues

flip. ⏳ The online version of the classic flip clock

tiny-static-map. JavaScript

action-table. Native HTML web component for easily adding sorting and filtering functionality to tables.

SonarJS. SonarSource Static Analyzer for JavaScript and TypeScript

park-ui. Beautifully designed components built with Ark UI and Panda CSS that work with a variety of JS frameworks.

elva. ✅ A multilingual, clean, green 11ty starter theme.

color-thief. Grab the color palette from an image using just Javascript. Works in the browser and in Node.

vike. (Replaces Next.js/Nuxt) 🔨 Build mission-critical applications with stability and development freedom.

nuqs. Type-safe search params state manager for React frameworks - Like useState, but stored in the URL query string.

fast-grid. World's most performant DOM-based web table. Try it! fast-grid.vercel.app/

number-flow. An animated number component for React, Vue, Svelte, and TS/JS.

rolldown. Fast Rust bundler for JavaScript/TypeScript with Rollup-compatible API.

brisa. The Web Platform Framework.

stricli. Build complex CLIs with type safety and no dependencies

underkill-stack. A react router 7 stack for simple projects

hooks. Empower your react project with accessible and customizable hooks. Copy paste the modern hooks and use them in your React or NextJS applications.

caniuse-cli. Command line tool for “Can I Use …” and MDN Browser Compat Data

formsmd. Developer-first, open source Typeform alternative (formerly known as Blocks.md)

svg-use. Tools and bundler plugins, to ergonomically load SVG files via use[href]

monorepo. Remix PWA v4

empathic. A set of small Node.js utilities to understand your pathing needs.

rspack. Fast Rust-based bundler for the web with a modernized webpack API 🦀

instant. Instant is the best backend for AI-coded apps. You get auth, permissions, storage, presence, and streams — everything you need to ship apps your users will love.

little-date. A friendly formatter to make date ranges small & sweet

eslint-plugin-import. ESLint plugin with rules that help validate proper imports.

module-replacements. A manifest of JS modules and their more modern/active replacements

eslint-plugin-depend. An ESLint plugin for suggesting optimisations in choice of dependency, native equivalents, etc.

ssrx. A thin layer on top of Vite to build modern SSR apps with a delightful DX.

theme-simple-wiki. Lume theme to create a wiki to store your notes

pro-essentials-workshop. TypeScript

medama. Self-hostable, privacy-focused website analytics.

es-toolkit. A modern JavaScript utility library that's 2-3 times faster and up to 97% smaller—a major upgrade to lodash.

matcha. 🍵 Drop-in semantic styling library in pure CSS. Highly customizable and perfect for simple websites and prototyping web apps!

enhance-starter-typescript. Typescript starter project for Enhance

motion-canvas. Visualize Your Ideas With Code

js-spread-grid. JS library for creating high-performance grid-based applications

roosterjs. roosterjs is a framework-independent javascript rich text editor.

public-conventions. In-house conventions and styles

GOTTH. Go

pocketbase. Open Source realtime backend in 1 file

remix-saas. A Lightweight, Production-Ready Remix Stack for your next SaaS application.

code-connect. A tool for connecting your design system components in code with your design system in Figma

glide-data-grid. 🚀 Glide Data Grid is a no compromise, outrageously fast react data grid with rich rendering, first class accessibility, and full TypeScript support.

tiny-world-map. tinyworldmap is a tiny world map for offline-first and low-bandwidth web apps

consent-banner-js. A zero-dependency, lightweight (~3kB), consent platform agnostic, cookie banner for any website (compatible with Google Consent Mode).

enhance-ssr-go. Enhance SSR for Go

postcss-design-token-utils. PostCSS plugin to convert design tokens to CSS custom properties and utility classes.

tus-js-client. A pure JavaScript client for the tus resumable upload protocol

neat. Neat allows you to build awesome gradients for your website, using 3d shaders

counterscale. Scalable web analytics you run yourself on Cloudflare

cally. Small, feature-rich calendar components

Journey.js. 🚶 A lightweight, easy-to-use JavaScript library to create interactive, customizable, accessible guided tours across your websites or web apps!

pragmatic-drag-and-drop. Fast drag and drop for any experience on any tech stack

waku. ⛩️ The minimal React framework

kotekan. A simple React framework built on Bun. Supports React Server Components (RSC).

glaze. The utility-based animation framework for the web.

beth-stack. A opinionated hypermedia-driven architecture balancing developer experience and performance.

shiki. A beautiful yet powerful syntax highlighter

mistcss. Create visual components for React without JavaScript or TypeScript. Leverage native HTML and CSS. It's an alternative to CSS-in-JS and CSS modules.

tokenbase. Create, manage and distribute design tokens.

simple-stack. 🌱 Web apps made simple

cookieconsent. A Javascript based solution for blocking/allowing even 3rd party cookies to comply with GDPR

css-hooks. The styling system that supercharges native inline styles with pseudo-classes, responsive queries, and advanced selector logic.

honox. HonoX - Hono based meta framework

HEAD. A simple guide to HTML <head> elements

safetest. TypeScript

CSSformalize. Custom styles for standard html forms

Hype. A stack of hyped up tech, but it actually rips hard.

autosize-textarea. JavaScript

vocs. Minimal Docs for Agents & Humans.

sda-utilities. Collection of utility functions for use with Scroll-Driven Animations

unpoly. Progressive enhancement for HTML

eleventy-plugin-svg-sprite. A high performance Eleventy universal plugin that compiles a directory of SVG files into a single SVG Sprite and adds shortcodes to embed SVG Sprite and SVG content in Eleventy templates.

htmx. </> htmx - high power tools for HTML

netlify-plugin-11ty. A plugin to make building with Eleventy and Netlify a joy!

remote-storage. remoteStorage is a simple library that combines the localStorage API with a remote server to persist data across sessions, devices, and browsers. It works as a simple key value database store and backend with support for React, Next.js, Vue, Node, or any Javascript stack

radish. A delightful React-based static site generator that outputs plain HTML & CSS.

humanfs. A modern filesystem API for JavaScript

mutative. Efficient immutable updates, 2-6x faster than naive handcrafted reducer, and more than 10x faster than Immer.

embla-carousel. A lightweight carousel library with fluid motion and great swipe precision.

react-spectrum. A collection of libraries and tools that help you build adaptive, accessible, and robust user experiences.

seven-minute-tabs. A minimal no-theme Tabs web component.

templ. A language for writing HTML user interfaces in Go.

spicy-sections. JavaScript

client-hints. Eliminate a flash of incorrect content by using client hints

Syntax.js. 💻 A lightweight, and easy-to-use, JavaScript library for code syntax highlighting!

vorma. The Golang metaframework, powered by Vite.

linkinator. Broken link checker that crawls websites and validates links. Find broken links, dead links, and invalid URLs in websites, documentation, and local files. Perfect for SEO audits and CI/CD.

webc-starter-kit. A starter project for Eleventy (11ty) using WebC as a main template langage. Also includes opiniated assets processing and a few more bells and whistles.

minify-html. Extremely fast and smart HTML + JS + CSS minifier, available for Rust, Deno, Java, Node.js, Python, Ruby, and WASM

loro. Make your JSON data collaborative and version-controlled with CRDTs

automerge-repo. TypeScript

dflex. The sophisticated Drag and Drop library you've been waiting for 🥳

gluestack-ui. React & React Native Components & Patterns (copy-paste components & patterns crafted with Tailwind CSS (NativeWind))

autocomp.js. A super tiny Javascript autocomplete / autosuggestions library. Zero dependencies, ~800 bytes min+gzip.

educational-sensational-inspirational-foundational. A website dedicated to a history of foundational web development blog posts.

mantine. A fully featured React components library

remix-pwa. An ecosystem of lightweight packages and helpers to integrate full PWA features into Remix 💿

sonner. An opinionated toast component for React.

replicache. Realtime Sync for Any Backend Stack

pagefind. Static low-bandwidth search at scale

react-plock. The 1kB Masonry Grid for React.

performance-leaderboard-pagespeed-insights. A plugin to run Lighthouse on Pagespeed Insights against a set of urls to see which site is the fastest.

webstudio. Open source website builder and Webflow alternative. Webstudio is an advanced visual builder that connects to any headless CMS, supports all CSS properties, and can be hosted anywhere, including with us.

puck. The visual editor for React.

remix-starter. 🎈 PartyKit ⤫ Remix 💿

sprite-your-svgs. Svelte

partykit. PartyKit simplifies developing multiplayer applications

vaul. A drawer component for React.

react-router-devtools. Debug your apps, find hydration errors, trace your network and more in your react-router app with these devtools

Parvus. An open source, dependency free image lightbox with the goal of being accessible.

lucia. Authentication, simple and clean

animotion. 🪄 Create beautiful presentations with Svelte

superstruct. A simple and composable way to validate data in JavaScript (and TypeScript).

modular-forms. The modular and type-safe form library for SolidJS, Qwik and Preact

valibot. The modular and type safe schema library for validating structural data 🤖

kuma-ui. 🐻‍❄️ A Headless, Utility-First, and Zero-Runtime UI Component Library ✨

react-tweet. Embed tweets in your React application.

knip. ✂️ Find unused files, dependencies and exports in your JavaScript and TypeScript projects. Knip it before you ship it!

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

detect-scroll. HTML

Book-For-Programmers.

primo. Agent-native visual CMS. Build sites with Claude/Codex/whatever, manage them visually.

wasp. The batteries-included full-stack framework for the AI era. Develop JS/TS web apps (React, Node.js, and Prisma) using declarative code that abstracts away complex full-stack features like auth, background jobs, RPC, email sending, end-to-end type safety, single-command deployment, and more.

unpic-placeholder. Pure-CSS image placeholders

cva. Class Variance Authority

xyflow. React Flow | Svelte Flow - Powerful open source libraries for building node-based UIs with React (https://reactflow.dev) or Svelte (https://svelteflow.dev). Ready out-of-the-box and infinitely customizable.

capo.js. Get your <head> in order

typescript-book. The Concise TypeScript Book: A Concise Guide to Effective Development in TypeScript. Free and Open Source.

conform. Progressively enhance HTML forms with React. Build resilient, type-safe forms with no hassle using web standards.

animxyz. The first truly composable CSS animation library. Built for Vue, React, SCSS, and CSS, AnimXYZ will bring your website to life.

vine. VineJS is a form data validation library for Node.js

London-Underground-Dot-Matrix-Typeface. A set of dot matrix fonts in the style of TfL's Underground arrivals board.

panda. 🐼 Universal, Type-Safe, CSS-in-JS Framework for Design Systems ⚡️

kv.js. ⚡️ Advanced in-memory caching for JavaScript

autocomplete. 🔮 Fast and full-featured autocomplete library

starlight. 🌟 Build beautiful, accessible, high-performance documentation websites with Astro

TypeStat. Converts JavaScript to TypeScript and TypeScript to better TypeScript. 🧫

linting-typescript-in-2023. Code samples for linting React and TypeScript in 2023. ✨

create-typescript-app. Quickstart-friendly TypeScript template with comprehensive, configurable, opinionated tooling. 🎁

liftoff. Mock Interview Simulator with AI-Powered Feedback

remix-live-loader. TypeScript

next-enterprise. 💼 An enterprise-grade Next.js boilerplate for high-performance, maintainable apps. Packed with features like Tailwind CSS, TypeScript, ESLint, Prettier, testing tools, and more to accelerate your development.

what-happens-when. An attempt to answer the age old interview question "What happens when you type google.com into your browser and press enter?"

headless-qr. A simple, modern QR code library

epic-stack. This is a Full Stack app starter with the foundational things setup and configured for you to hit the ground running on your next EPIC idea.

ark. Unstyled, accessible UI components for your design System. Works in React, Vue, Solid, and Svelte.

million. Optimizing compiler for React