Playwright is a framework for Web Testing and Automation. It allows testing Chromium, Firefox and WebKit with a single API.

The optimal flow for Jest based testing in VS Code

Painless testing for Svelte components

A fast and fun test runner for Vite & Node 🐈️ Powered by Vite ⚡️

uvu is an extremely fast and lightweight test runner for Node.js and the browser

Web performance library for measuring all performance vitals metrics

Mutation testing for JavaScript and friends

Clinic.js diagnoses your Node.js performance issues

🦎 Simple and complete Vue.js testing utilities that encourage good testing practices.

Get a full fake REST API with zero coding in less than 30 seconds (seriously)

RecordRTC is WebRTC JavaScript library for audio/video as well as screen activity recording. It supports Chrome, Firefox, Opera, Android, and Microsoft Edge. Platforms: Linux, Mac and Windows.

Insomnia Mockbin is the underlying backend for the API mocks capability of Insomnia. It is built and used by Kong, the author of the open-source Kong Gateway.

A simulation data generator

Svelte component test recipes using Vitest & Testing Library with TypeScript

Fast, easy and reliable testing for anything that runs in a browser.

Modern HTTP benchmarking tool

🪢 Open source LLM engineering platform: LLM Observability, metrics, evals, prompt management, playground, datasets. Integrates with LlamaIndex, Langchain, OpenAI SDK, LiteLLM, and more. 🍊YC W23

Provides a simple way to run Selenium Grid with Chrome, Firefox, and Edge using Container Platform, making it easier to perform browser automation at scale

Write scalable load tests in plain Python 🚗💨

Record, Replay, and Stub HTTP Interactions.