Side by side
uvu vs Web Test Runner
Both stand on javascript testing frameworks. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan Web
uvu combines individually runnable tests with optional suite collection and browser support. Its file matching uses regular expressions rather than glob patterns when a directory is specified.
Visit uvu
Free plan LinuxMacSelf-hosted+2
Web Test Runner combines isolated browser runs with debugging, watch mode, and coverage features. Its documented launchers span local and remote browser testing, while coverage defaults to Chromium.
Visit Web Test RunnerThe facts
| uvu | Web Test Runner | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | Not published |
| Runs on | Web | Linux, Mac, Self-hosted, Web, Windows |
| Lowest paid plan | Free or on request | Free or on request |
| Plans published | 1 | 1 |
| Maker | Not published | Not published |
| Website | github.com | modern-web.dev |
| On javascript testing frameworks | #16 of 23 | #12 of 23 |
uvu: what it does well
- Runs self-contained test files individually.
- Supports async tests and native ES modules.
- Works in browsers, including its optional assertion module.
- CLI can stop at the first failure.
What to know first
- Directory matching uses regular expressions, not glob patterns.
- Using the CLI is optional, so it is not required for test execution.
Web Test Runner: what it does well
- Runs test files in parallel and isolation
- Supports Chromium, Firefox, and WebKit through Playwright
- Watch mode reruns tests when files change
- Coverage includes configurable thresholds and reports
- Free and MIT-licensed
What to know first
- Default coverage instrumentation uses Chromium
- BrowserStack remote testing requires its launcher
- Installation is as an npm development dependency
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