Testcontainers is a Java library that supports JUnit tests
A node.js library for testing modern web applications
Lighter web automation with Python
Supports tests, providing lightweight, throwaway instances of database
FFmpeg for browser, powered by WebAssembly
Running Elixir in the browser
A JavaScript library for generating random user agents with data
Offload tasks to a pool of workers on node.js and in the browser
A collection of tips to help take your CSS skills pro
Flexible Node.js AI-assisted crawler library
Tools for publishing transcripts for Claude Code sessions
Collection of Three.js skill files
Plotly Graphing Library for MATLAB
Create badass, fluid and smooth transitions between website’s pages
A complete IndexedDB wrapper with SQL like syntax
libsodium compiled to Webassembly and pure JavaScript
Self-hosted collection of powerful web-based tools for everyday tasks
HLS.js is a JavaScript library that plays HLS in browsers
Production-grade client-side tracing, profiling, and analysis
A Guide to Advanced Front-End Interviews
Digital library with smart shelves
The official Node.js / Typescript library for the Groq API
More than CSS
GPU-accelerated GUI development for Node.js and the browser
Custom elements (web components) for making audio and video player