# Testing Library vs WebdriverIO

**Leader by vioscaleAI score:** Testing Library

| Attribute | Testing Library | WebdriverIO |
|---|---|---|
| **vioscaleAI score** | 64.8 (77% (high)) | 47.1 (22% (low)) |
| activity.commits_last_30d | 1 | 3 |
| adoption.dependent_repos | 1,412,044 | - |
| adoption.github_stars | 3,336 | 6 |
| adoption.package_downloads_weekly | 85,960,772 | - |
| content.faq | `[{"answer":"Testing Library provides lightweight utilities for testing JavaScript applications, with implementations for React, Angular, Vue, and other frameworks. It emphasizes testing best practices and user-centric testing approaches. It is indexed under Testing Tools.","source":"https://testing-library.com","question":"What is Testing Library?","confidence":0.6},{"answer":"Testing Library is open source, so it can be self-hosted and used at no licence cost. It is released under the MIT licence. Pricing changes often, so verify at source before relying on it.","source":"https://testing-library.com","question":"Is Testing Library free to use?","confidence":0.6},{"answer":"Testing Library supports the web and a command-line interface. Platforms we have not confirmed are simply not listed here rather than ruled out.","source":"https://testing-library.com","question":"What platforms does Testing Library support?","confidence":0.6},{"answer":"We have confirmed 3 integrations for Testing Library, including Jest, Cypress and GitHub Actions. This is what we could verify from public sources, so the vendor may support others we have not indexed.","source":"https://testing-library.com","question":"What does Testing Library integrate with?","confidence":0.6},{"answer":"Yes. Testing Library is published under the MIT licence, a permissive licence that generally allows commercial use and modification. Licence terms can change between releases, so verify against the repository for the version you intend to use.","source":"https://github.com/testing-library/dom-testing-library","question":"Is Testing Library open source?","confidence":0.99}]` | `[{"answer":"A test automation framework supporting e2e, unit, and component testing using WebDriver, WebDriver BiDi, and Appium automation technology. It is indexed under Testing Tools.","source":"https://webdriver.io","question":"What is WebdriverIO?","confidence":0.6},{"answer":"WebdriverIO is open source, so it can be self-hosted and used at no licence cost. It is released under the MIT licence. Pricing changes often, so verify at source before relying on it.","source":"https://webdriver.io","question":"Is WebdriverIO free to use?","confidence":0.6},{"answer":"WebdriverIO supports the web and a command-line interface. Platforms we have not confirmed are simply not listed here rather than ruled out.","source":"https://webdriver.io","question":"What platforms does WebdriverIO support?","confidence":0.6},{"answer":"Yes. WebdriverIO can be deployed self-hosted, so it does not have to run on the vendor's infrastructure.","source":"https://webdriver.io","question":"Can WebdriverIO be self-hosted?","confidence":0.6},{"answer":"We have confirmed 13 integrations for WebdriverIO, including Sauce Labs, BrowserStack, TestingBot, TestMu AI, Appium, WebDriver, Allure and JUnit, plus 5 more. This is what we could verify from public sources, so the vendor may support others we have not indexed.","source":"https://webdriver.io","question":"What does WebdriverIO integrate with?","confidence":0.6},{"answer":"Yes. WebdriverIO is published under the MIT licence, a permissive licence that generally allows commercial use and modification. Licence terms can change between releases, so verify against the repository for the version you intend to use.","source":"https://github.com/webdriverio/i18n","question":"Is WebdriverIO open source?","confidence":0.95}]` |
| deployment.options | - | `{"self_hosted":true}` |
| description.long | A family of testing utilities that help you test UI components by simulating how users interact with them, focusing on confidence-building tests that avoid implementation details. | Enables automated testing of web browsers, mobile applications, and desktop software with built-in capabilities for network simulation, automatic waiting, and result reporting. |
| features.capabilities | `{"mocking":false,"coverage":false,"languages":"JavaScript, TypeScript","assertions":true,"watch_mode":false,"ci_integration":true,"snapshot_testing":false,"browser_automation":false,"parallel_execution":false}` | `{"mocking":true,"languages":"JavaScript (Node.js)","assertions":true,"test_types":"e2e","open_source":true,"ci_integration":true,"auto_wait_retry":true,"no_code_recorder":true,"browser_automation":true,"network_interception":true,"ai_self_healing_locators":true}` |
| integrations.count | 12 | 14 |
| integrations.list | `[{"name":"Jest"},{"name":"Cypress"},{"name":"GitHub Actions"},{"name":"React","native":true,"category":"ui-framework","direction":"bidirectional"},{"name":"Vue","native":true,"category":"ui-framework","direction":"bidirectional"},{"name":"Angular","native":true,"category":"ui-framework","direction":"bidirectional"},{"name":"Svelte","native":true,"category":"ui-framework","direction":"bidirectional"},{"name":"React Native","native":true,"category":"mobile-framework","direction":"bidirectional"},{"name":"Mocha","native":true,"category":"testing-framework","direction":"bidirectional"},{"name":"Puppeteer","native":false,"category":"browser-automation","direction":"bidirectional"},{"name":"Testcafe","native":false,"category":"testing-framework","direction":"bidirectional"},{"name":"Nightwatch","native":false,"category":"testing-framework","direction":"bidirectional"},{"name":"JSDOM","native":true,"category":"dom-simulation","direction":"bidirectional"}]` | `[{"name":"Sauce Labs"},{"name":"BrowserStack"},{"name":"TestingBot"},{"name":"TestMu AI"},{"name":"Appium"},{"name":"WebDriver"},{"name":"WebDriver BiDi"},{"name":"Allure"},{"name":"JUnit"},{"name":"Spec Reporter"},{"name":"Dot Reporter"},{"name":"SumoLogic"},{"name":"Concise Reporter"},{"name":"Lighthouse"},{"name":"Axe Core","category":"accessibility","direction":"inbound"},{"name":"Percy","category":"visual-testing","direction":"outbound"}]` |
| language.primary | JavaScript | TypeScript |
| license.spdx | MIT | MIT |
| platform.support | `{"web":true}` | `{"cli":true,"web":true}` |
| pricing | `{"type":"open_source","summary":"Free, open source under MIT license","freeTier":true,"sourceUrl":"https://testing-library.com","retrievedAt":"2026-08-14T11:09:26.659Z"}` | `{"type":"open_source","freeTier":true,"sourceUrl":"https://webdriver.io","retrievedAt":"2026-08-13T18:18:54.491Z"}` |
| pricing.free_tier | yes | yes |
| pricing.model | open_source | open_source |
| pricing.price_level | free | free |
| pricing.transparent | yes | yes |
| release.cadence_days | 15 | - |
| release.history | `[{"url":"https://github.com/testing-library/dom-testing-library/releases/tag/v10.4.2","date":"2026-09-13T18:07:21Z","type":"stable","version":"v10.4.2"},{"url":"https://github.com/testing-library/dom-testing-library/releases/tag/v10.4.1","date":"2025-07-27T13:23:38Z","type":"stable","version":"v10.4.1"},{"url":"https://github.com/testing-library/dom-testing-library/releases/tag/v10.4.0","date":"2024-07-22T12:18:31Z","type":"stable","version":"v10.4.0"},{"url":"https://github.com/testing-library/dom-testing-library/releases/tag/v10.3.2","date":"2024-07-15T14:16:28Z","type":"stable","version":"v10.3.2"},{"url":"https://github.com/testing-library/dom-testing-library/releases/tag/v10.3.1","date":"2024-07-05T10:58:42Z","type":"stable","version":"v10.3.1"},{"url":"https://github.com/testing-library/dom-testing-library/releases/tag/v10.3.0","date":"2024-07-02T12:15:10Z","type":"stable","version":"v10.3.0"},{"url":"https://github.com/testing-library/dom-testing-library/releases/tag/v10.2.0","date":"2024-06-24T11:46:05Z","type":"stable","version":"v10.2.0"},{"url":"https://github.com/testing-library/dom-testing-library/releases/tag/v10.1.0","date":"2024-04-29T07:47:58Z","type":"stable","version":"v10.1.0"},{"url":"https://github.com/testing-library/dom-testing-library/releases/tag/v10.0.0","date":"2024-04-08T12:33:33Z","type":"stable","version":"v10.0.0"},{"url":"https://github.com/testing-library/dom-testing-library/releases/tag/v10.0.0-alpha.3","date":"2024-04-04T07:35:13Z","type":"prerelease","version":"v10.0.0-alpha.3"},{"url":"https://github.com/testing-library/dom-testing-library/releases/tag/v9.3.4","date":"2024-01-08T20:17:28Z","type":"stable","version":"v9.3.4"},{"url":"https://github.com/testing-library/dom-testing-library/releases/tag/v10.0.0-alpha.2","date":"2023-10-03T09:35:50Z","type":"prerelease","version":"v10.0.0-alpha.2"},{"url":"https://github.com/testing-library/dom-testing-library/releases/tag/v9.3.3","date":"2023-09-17T18:11:38Z","type":"stable","version":"v9.3.3"},{"url":"https://github.com/testing-library/dom-testing-library/releases/tag/v9.3.2","date":"2023-09-17T15:14:57Z","type":"stable","version":"v9.3.2"},{"url":"https://github.com/testing-library/dom-testing-library/releases/tag/v10.0.0-alpha.1","date":"2023-09-10T06:32:20Z","type":"prerelease","version":"v10.0.0-alpha.1"},{"url":"https://github.com/testing-library/dom-testing-library/releases/tag/v8.20.1","date":"2023-06-16T19:50:30Z","type":"stable","version":"v8.20.1"},{"url":"https://github.com/testing-library/dom-testing-library/releases/tag/v9.3.1","date":"2023-06-14T15:00:06Z","type":"stable","version":"v9.3.1"},{"url":"https://github.com/testing-library/dom-testing-library/releases/tag/v9.3.0","date":"2023-05-12T11:55:22Z","type":"stable","version":"v9.3.0"},{"url":"https://github.com/testing-library/dom-testing-library/releases/tag/v9.2.0","date":"2023-03-24T18:47:01Z","type":"stable","version":"v9.2.0"},{"url":"https://github.com/testing-library/dom-testing-library/releases/tag/v9.1.0","date":"2023-03-24T18:08:58Z","type":"stable","version":"v9.1.0"}]` | - |
| reliability.status_page | - | yes |
| security.scorecard | 5 | - |
| security.trust_center | - | https://webdriver.io/docs/security |
| security.vulnerabilities | `{"count":0,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=npm&package_name=%40testing-library%2Fdom&per_page=100","last_12m":0,"max_severity":null}` | - |

## Capabilities (Testing Tools)

| Capability | Testing Library | WebdriverIO |
|---|:--:|:--:|
| **Core** |  |  |
| Test types | - | Unit + integration + E2E |
| Browser automation | ✗ | ✓ |
| Built-in assertion library | ✓ | ✓ |
| Languages | JavaScript, TypeScript | JavaScript (Node.js) |
| **Isolation** |  |  |
| Mocking / stubbing | ✗ | ✓ |
| **Techniques** |  |  |
| Snapshot testing | ✗ | - |
| **Performance** |  |  |
| Parallel execution | ✗ | - |
| **Insight** |  |  |
| Code coverage | ✗ | - |
| **DX** |  |  |
| Watch mode | ✗ | - |
| **Ops** |  |  |
| CI integration | ✓ | ✓ |

*Source: vioscaleAI. Generated 2026-10-17T05:41:44.073Z. "-" = undocumented, not absent.*