TypeScript-first schema validation with static type inference

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

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 cust…

Make images smaller using best-in-class codecs, right in the browser.

Lightweight, user-friendly onboarding tour library

Fast math typesetting for the web.

Visualize Your Ideas With Code

A collection of essential TypeScript types

Build production-ready applications in TypeScript

Shoelace is now Web Awesome. Come see what’s new!

JavaScript drag and drop, resizing and multi-touch gestures with inertia and snapping for modern browsers (and also IE9+)

Comlink makes WebWorkers enjoyable.

The entrance repository of Markdown presentation ecosystem

The de facto GitHub star history graph.

Get the main content of any page as Markdown.

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

The next small thing in web development, powered by Svelte

A tool to help migrate JavaScript code quickly and conveniently to TypeScript

TypeScript for Tiny IoT Devices (ESP32, RP2040, ...)

Bubblewrap is a Command Line Interface (CLI) that helps developers to create a Project for an Android application that launches an existing Progressive Web App (PWAs) using a Trusted Web Activity.

Easily type math in your webapp

Part guillotine, part graveyard for Google's doomed apps, services, and hardware.

Creepy device and browser fingerprinting

Easy visualizer for JavaScript KeyCodes

Catalyst is a set of patterns and techniques for developing components within a complex application.

The fastest little YouTube web component on this side of the internet. The shadow dom web component version of Paul's lite-youtube-embed.

A javascript-only SVG to PDF conversion utility that runs in the browser. Brought to you by yWorks - the diagramming experts

Task runner in JS monorepos