Karma
Test runner for JavaScript that spawns real browsers to execute tests, popular for Angular projects although now in maintenance mode.
Our Verdict
A legacy default for Angular that teams should actively plan to migrate off of.
Pros
- Runs tests in real browsers, not just jsdom
- Stable integration with Angular CLI
- Works with Jasmine, Mocha and Chai
- Good CI integration for cross-browser runs
Cons
- Officially in maintenance mode since 2023
- Slow to boot compared to Vitest or Jest
- Angular team now pushes Web Test Runner
- Complex config versus modern runners
When to Use Karma
Good fit if you need
- Run JavaScript tests in real Chrome, Firefox, Safari
- Angular unit test execution with Karma test runner
- Continuous test re-run on file change during development
- Browser-compatible test execution with coverage reports
Pricing
Price wrong?Karma Pricing
- Pricing Model
- free
- Free Tier
- Yes
- Entry Price
- —
- Enterprise Available
- No
- Transparency Score
- —
Beta — estimates may differ from actual pricing
Estimated Monthly Cost
$25
Estimated Annual Cost
$300
Estimates are approximate and may not reflect current pricing. Always check the official pricing page.
Project Health
Health Score
10
6 days
194d
400
46d
MIT
Last checked: 2026-04-21
Lock-in Assessment
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