Open Source Packages
Libraries, frameworks, tools, and SDKs used by the apps in this directory — scored the same way as the apps themselves.
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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.
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.
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.
start-server-and-test
Starts your dev server, waits for it to respond, runs your test command, then shuts the server down automatically.
jest-extended
Additional custom matchers for Jest to extend and simplify your test assertions.
ipykernel
The IPython kernel that lets Jupyter notebooks, JupyterLab, and other frontends run and interact with Python code.
ci-info
Zero-dependency detection of the current CI environment, vendor, and pull-request status in Node.js.
vitest-canvas-mock
A drop-in HTML canvas mock for Vitest that emulates spec-accurate CanvasRenderingContext2D behavior in jsdom test environments.
IPython
A productive interactive Python shell with rich introspection, tab completion, and magic commands.