Open Source Packages
Libraries, frameworks, tools, and SDKs used by the apps in this directory — scored the same way as the apps themselves.
All Packages
Category
Tags3
Sort:Used by Most Apps
Vitest
A blazing-fast unit testing framework powered by Vite, with Jest-compatible APIs out of the box.
Playwright
Cross-browser end-to-end web testing and browser automation with a single API for Chromium, Firefox, and WebKit.
tsx
A drop-in replacement for the node CLI that runs TypeScript and ESM files instantly, powered by esbuild.
jest
Delightful JavaScript testing with zero-config setup, snapshots, mocking, and coverage
pytest
The Python testing framework that makes writing small tests easy and scales to complex functional test suites.
css-loader
Resolves CSS @import and url() like JavaScript imports so webpack can bundle stylesheets and their assets.
style-loader
A webpack loader that injects bundled CSS into the DOM using style or link tags at runtime.
babel-loader
Babel loader for webpack (and Rspack) that transpiles modern JavaScript with filesystem caching and source map support.
sass-loader
Compiles Sass and SCSS files to CSS inside a webpack build, wiring in Dart Sass or Sass Embedded automatically.
Cypress
Fast, easy, and reliable end-to-end and component testing for anything that runs in a browser.
mocha
The classic, battle-tested JavaScript test framework for Node.js and the browser, built around flexible async testing and pluggable reporters.
Chai
BDD/TDD assertion library for Node.js and the browser, framework-agnostic
c8
Native V8 code coverage for Node.js, with Istanbul-compatible reports and zero build-step setup.
Ginkgo
A mature, BDD-style testing framework for Go that pairs with Gomega to write expressive, parallelizable specs.
react-spinners
A collection of 23 lightweight, customizable loading spinner components for React apps.