Karma

Karma is ranked #2 of 23 in javascript testing frameworks on The Geeks Club. It runs on Android, iOS, Linux, macOS, Self-hosted, Web, Windows. There is a free plan.

Karma plans and pricing

All plans

Karma Free MIT-licensed open-source software · deprecated; no new features or general bug fixes github.com · 29 Sept 2026

Compared on javascript testing frameworks

Free plan: Yes
Component testing: Yes
Coverage reporting: Yes
Supported runtimes: Node.js
Parallel execution: Yes

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Karma

Purpose: Karma runs JavaScript tests in multiple real browsers and reports results to developers.
How it works: Karma starts a web server, connects browsers, runs tests in them, and displays their results.
Automatic reruns: Karma watches configured files and reruns tests when a file changes.
Testing frameworks: Plugins are available for Jasmine, Mocha, QUnit, and other testing frameworks.
Browser launchers: Documented launchers include Chrome, Firefox, Safari, PhantomJS, JSDOM, Opera, Internet Explorer, SauceLabs, and BrowserStack.
Manual device capture: A browser on another device, including a phone or tablet on the same network, can be captured by visiting the Karma server URL.
Plugin model: Preprocessors, reporters, browser launchers, and framework adapters are plugins that can be installed from npm or written for Karma.
CI integrations: The documentation provides integration guides for Travis CI, Jenkins, and Semaphore CI.
Installation: Karma runs on Node.js, is distributed as an npm package, and the installation guide recommends installing it locally in the project.
License: Karma is released under the MIT license.
Maintenance status: Karma is deprecated and is not accepting new features or general bug fixes; critical security issues will still be triaged and fixed during the stated support period.
Security support period: The repository says critical security fixes will continue until 12 months after Angular CLI's Web Test Runner support is marked stable.
Who it is for: The project describes Karma as useful for developers who want to run tests locally, in multiple browsers, on each save, or on a continuous integration server.
Testing scope: The FAQ says Karma was primarily designed for low-level unit testing and recommends Protractor for high-level testing.
Price from: Free

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Where it ranks on The Geeks Club

Best JavaScript Testing Frameworks in 2026#2 of 23

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Sources

github.com/karma-runner/karma· checked 29 Sept 2026
karma-runner.github.io/6.4/intro/how-it-works.html· checked 29 Sept 2026
karma-runner.github.io/latest/config/browsers.html· checked 29 Sept 2026
karma-runner.github.io/latest/config/plugins.html· checked 29 Sept 2026
karma-runner.github.io/6.4/intro/installation.html· checked 29 Sept 2026
karma-runner.github.io/6.4/intro/faq.html· checked 29 Sept 2026