Karma
6.7#4 in javascript testing frameworksFree planFree planAndroidiOSWebLinux
VisitKarma vs Web Test Runner
Web Test Runner
6.9#2 in javascript testing frameworksFree planFree planWebLinuxmacOSSelf-hosted
VisitWhat both publish
| Fact | Karma | Web Test Runner |
|---|---|---|
| Browser launchers | Documented launchers include Chrome, Firefox, Safari, PhantomJS, JSDOM, Opera, Internet Explorer, SauceLabs, and BrowserStack. | Documented launchers include Puppeteer, Playwright, Selenium, BrowserStack, and WebdriverIO. |
| Installation | Karma runs on Node.js, is distributed as an npm package, and the installation guide recommends installing it locally in the project. | The official installation instructions use npm to add @web/test-runner as a development dependency. |
| License | Karma is released under the MIT license. | The project's GitHub page identifies the repository license as MIT. |
| Purpose | Karma runs JavaScript tests in multiple real browsers and reports results to developers. | Web Test Runner is a test runner for web applications. |
| Support | The project directs questions to its mailing list or Gitter and says the issue tracker is for bug reports and feature discussions. | The project links to Discord for community discussion and lists sponsorship and contributions as ways to support it. |
Karma plans
- KarmaFree
Web Test Runner plans
- Open sourceFree
Pick Karma if…
Karma may suit developers who want to run JavaScript tests locally, in multiple browsers, on file changes, or in a CI server. Its stated focus is low-level unit testing.
Pick Web Test Runner if…
It suits developers who want to run web application tests across browser engines, locally or through documented remote launchers. Its watch mode and coverage reporting may also help teams working on test feedback and coverage goals.