Karma
Test runner for JavaScript that executes tests across multiple browsers and environments.
Testing npm MIT
Used in agent projects
26
0.2% of 12,697 public repos built with AI coding agents
Rank in testing
#30 of 40
by use in those projects
Downloads
3M
npm, last 7 days, karma
GitHub stars
12K
last push Jun 10, 2026
How Karma is used
Karma is a dependency in 26 of the 12,697 public GitHub projects set up for AI coding agents that we scanned (0.2%), #30 of 40 in testing. The most used alternative there is Vitest. Projects that use it most often also use karma-chrome-launcher (96.2%), karma-jasmine (88.5%), Jasmine (84.6%).
Often used with Karma
| karma-chrome-launcher | 96.2% of Karma projects · 488.3× more than average |
|---|---|
| karma-jasmine | 88.5% of Karma projects · 488.3× more than average |
| Jasmine | 84.6% of Karma projects · 488.3× more than average |
| karma-coverage | 84.6% of Karma projects · 488.3× more than average |
| Angular | 80.8% of Karma projects · 98.6× more than average |
| Karma Jasmine HTML Reporter | 80.8% of Karma projects · 488.3× more than average |
| RxJS | 80.8% of Karma projects · 58.3× more than average |
| zone.js | 69.2% of Karma projects · 199.8× more than average |
By coding agent
| Cursor | 0.4% of projects set up for it |
|---|---|
| GitHub Copilot | 0.2% of projects set up for it |
| Claude Code | 0.1% of projects set up for it |
Share of public repos configured for each agent that list Karma as a dependency.
Install
| Package | npm install karma |
|---|---|
| Main stacks | TypeScript / JavaScript (26) |
| Example projects | bebechien/AIventure, Cryptorubic/rubic-app, RobotlegsJS/RobotlegsJS-Phaser, lekhmanrus/ngx-multiple-dates |
Alternatives to Karma
| Tool | Used in agent projects | Downloads / wk | GitHub stars | License |
|---|---|---|---|---|
| Vitest npm Next-generation testing framework powered by Vite with native ESM. |
1,549 (12.2%) | 123M | 17.2K | MIT |
| Playwright (JavaScript) npm Cross-browser automation library for end-to-end testing. |
1,117 (8.8%) | 74.2M | 97.4K | Apache-2.0 |
| Testing Library npm Testing utilities for React encouraging testing user behavior. |
915 (7.2%) | 68.7M | 19.7K | MIT |
| Jest npm Delightful JavaScript testing framework with minimal configuration. |
702 (5.5%) | 46.3M | 45.6K | MIT |
| jsdom npm JavaScript implementation of web standards for testing DOM interactions. |
681 (5.4%) | 112M | 21.7K | MIT |
| pytest pypi Simple, powerful Python testing framework with fixtures and plugins. |
330 (2.6%) | 196M | 14.6K | — |
| Chai npm BDD/TDD assertion library for Node.js and browsers with expressive syntax. |
305 (2.4%) | 14M | 8,265 | MIT |
| Mocha npm Feature-rich JavaScript test framework for Node.js and browsers. |
281 (2.2%) | 12.6M | 22.9K | MIT |