ESM Unit vs Karma
| ESM Unit | Karma | |
|---|---|---|
| Free plan | No | Yes |
| Free trial | No | No |
| Paid from | — | Free |
| Open source | No | No |
| Platforms | Web | Android, iOS, Linux, macOS, self-hosted, Web, Windows |
| Coverage reporting | Yes | Yes |
| Supported runtimes | Node.js 18 LTS or later; Chrome; Firefox; Safari; Microsoft Edge | Node.js |
| Parallel execution | Yes | Yes |
| Free plan | — | Yes |
| Component testing | — | Yes |
Both are listed in Best JavaScript Testing Frameworks. On Inferse, Karma scores higher on our published basis.