# karma-runner/karma

Spectacular Test Runner for JavaScript

Repository: https://github.com/karma-runner/karma
Canonical: https://ross.abutalabs.com/products/karma
Homepage: http://karma-runner.github.io
Language: JavaScript
License: MIT
License Family: permissive
Last push: 2026-06-10T04:55:37+00:00

## Health v2 (maintenance only)
Score: 62/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 86, release rhythm 8, longevity 100
- inputs: {"age_days": 5439, "days_push": 84, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 11965, forks 1712 (observed 2026-08-28T04:10:50.568214+00:00)

## What it is
Karma is a JavaScript test runner that executes tests in multiple real browsers, originally built to make test-driven development easy and fast. It is now officially deprecated and only receives critical security fixes, with Jest, Vitest, Web Test Runner, and jasmine-browser-runner suggested as alternatives.

## Use cases
- run unit tests in real browsers
- set up test-driven development for JavaScript
- test Angular applications in a browser
- run tests across multiple browsers automatically
- integrate browser-based testing into CI

## When to choose
- maintaining an existing legacy Karma setup, especially Angular projects not yet migrated
- you need a battle-tested browser test runner for an older codebase

## When to avoid
- starting a new JavaScript or Angular project
- you want an actively maintained tool with modern performance
- you prefer Node-based testing with Jest or Vitest

## Facets
- artifact type: cli-tool
- maturity: maintenance
- function: testing, e2e-testing, cli, developer-tools
- domain: testing, web-development, frontend, developer-tools
- platform: cross-platform, cli
- tags: test-runner, browser-testing, javascript, deprecated, tdd, angular, nodejs

## Member repositories
- karma-runner/karma (main) score 62

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:10:50.568214+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T17:15:02.224046+00:00, confidence not recorded.
  - readme: https://github.com/karma-runner/karma (fetched 2026-08-28T04:10:50.568214+00:00, sha 56c429d0c492)
  - homepage: http://karma-runner.github.io (fetched 2026-08-29T08:13:09.181734+00:00, sha 44136fa355b3)
- Data as of 2026-08-30T08:39:29.467469+00:00.