Thrill
Runs tests in many browsers.
Rulers Guides.js
Creates Photoshop-like guides and rulers interface on a web page
Prettydiff
Compare code instead of text.
Jscritic
Quickly check how well 3rd party script behaves.
Ar.js
Image tracking, Location Based AR, Marker tracking. All on the Web.
Stencil
A Web Component compiler for building fast, reusable UI components and Progressive Web Apps 💎 Built by the Ionic Framework team
Galen
Layout and functional testing framework for websites
Broccoli
Browser compilation library – a build tool for applications that run in the browser
Argon
An open-standards augmented reality platform for the web
Dotenv Linter
⚡️Lightning-fast linter for .env files. Written in Rust 🦀
Generator Mcfly
A Yeoman generator for scaffolding an application using angular, browserify, ionic and famous
Stacktrace.js
Framework-agnostic, micro-library for getting stack traces in all web browsers
Intern
A next-generation code testing stack for JavaScript.
Should.js
BDD style assertions for node.js -- test framework agnostic
Recoil
Recoil is an experimental state management library for React apps. It provides several capabilities that are difficult to achieve with React alone, while being compatible with the newest features of React.
Cypress
Fast, easy and reliable testing for anything that runs in a browser.
Mimosa
A lightning-fast, modular, next generation browser development tool.