# Selenium vs Testing Library

**Leader by vioscaleAI score:** Selenium

| Attribute | Selenium | Testing Library |
|---|---|---|
| **vioscaleAI score** | 71.7 (76% (high)) | 64.8 (77% (high)) |
| activity.commits_last_30d | 100 | 1 |
| adoption.dependent_repos | 98,124 | 1,412,044 |
| adoption.github_stars | 34,541 | 3,336 |
| adoption.package_downloads_weekly | 6,935,447 | 85,960,772 |
| content.faq | `[{"answer":"Open-source tool that automates web browsers to enable automated testing of web applications, regression testing, and automation of repetitive web-based administrative tasks. Includes WebDriver for robust test automation, IDE for record-and-playback scripting, and Grid for distributed test execution. It is indexed under Testing Tools.","source":"https://www.selenium.dev","question":"What is Selenium?","confidence":0.6},{"answer":"Selenium is open source, so it can be self-hosted and used at no licence cost. It is released under the Apache-2.0 licence. Pricing changes often, so verify at source before relying on it.","source":"https://www.selenium.dev","question":"Is Selenium free to use?","confidence":0.6},{"answer":"Selenium supports Windows, macOS, Linux and a command-line interface. Platforms we have not confirmed are simply not listed here rather than ruled out.","source":"https://www.selenium.dev","question":"What platforms does Selenium support?","confidence":0.6},{"answer":"Yes. Selenium can be deployed self-hosted, so it does not have to run on the vendor's infrastructure.","source":"https://www.selenium.dev","question":"Can Selenium be self-hosted?","confidence":0.6},{"answer":"We have confirmed 4 integrations for Selenium, including Chrome, Firefox, Edge and Appium. This is what we could verify from public sources, so the vendor may support others we have not indexed.","source":"https://www.selenium.dev","question":"What does Selenium integrate with?","confidence":0.6},{"answer":"Yes. Selenium is published under the Apache-2.0 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/SeleniumHQ/selenium","question":"Is Selenium open source?","confidence":0.99}]` | `[{"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}]` |
| deployment.options | `{"self_hosted":true}` | - |
| description.long | Selenium is an open-source testing framework that automates web browsers for testing applications and automating web-based administration tasks across multiple programming languages. | 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. |
| features.capabilities | `{"protocol":"multi","languages":"Java, JavaScript, Python, Ruby, .NET","test_types":"e2e","open_source":true,"headless_mode":true,"ci_integration":true,"no_code_recorder":true,"browser_automation":true,"parallel_execution":true}` | `{"mocking":false,"coverage":false,"languages":"JavaScript, TypeScript","assertions":true,"watch_mode":false,"ci_integration":true,"snapshot_testing":false,"browser_automation":false,"parallel_execution":false}` |
| integrations.count | 5 | 12 |
| integrations.list | `[{"name":"Chrome"},{"name":"Firefox"},{"name":"Edge"},{"name":"Appium"},{"name":"Chrome for Testing (CfT)"}]` | `[{"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"}]` |
| language.primary | Java | JavaScript |
| license.spdx | Apache-2.0 | MIT |
| market.availability | `{"primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` | - |
| platform.support | `{"web":true}` | `{"web":true}` |
| pricing | `{"type":"open_source","sourceUrl":"https://www.selenium.dev","retrievedAt":"2026-10-13T15:12:44.428Z"}` | `{"type":"open_source","summary":"Free, open source under MIT license","freeTier":true,"sourceUrl":"https://testing-library.com","retrievedAt":"2026-08-14T11:09:26.659Z"}` |
| pricing.free_tier | yes | yes |
| pricing.model | open_source | open_source |
| pricing.price_level | free | free |
| pricing.transparent | yes | yes |
| release.cadence_days | 30 | 15 |
| release.history | `[{"url":"https://github.com/SeleniumHQ/selenium/releases/tag/nightly","date":"2026-10-13T00:30:25Z","type":"prerelease","version":"nightly"},{"url":"https://github.com/SeleniumHQ/selenium/releases/tag/selenium-4.51.0","date":"2026-10-09T19:18:18Z","type":"stable","version":"selenium-4.51.0"},{"url":"https://github.com/SeleniumHQ/selenium/releases/tag/selenium-4.50.0","date":"2026-09-30T22:16:28Z","type":"stable","version":"selenium-4.50.0"},{"url":"https://github.com/SeleniumHQ/selenium/releases/tag/selenium-4.49.0","date":"2026-09-09T15:35:47Z","type":"stable","version":"selenium-4.49.0"},{"url":"https://github.com/SeleniumHQ/selenium/releases/tag/selenium-4.48.0","date":"2026-08-27T20:13:03Z","type":"stable","version":"selenium-4.48.0"},{"url":"https://github.com/SeleniumHQ/selenium/releases/tag/selenium-4.47.0","date":"2026-08-10T18:00:07Z","type":"stable","version":"selenium-4.47.0"},{"url":"https://github.com/SeleniumHQ/selenium/releases/tag/selenium-4.46.0","date":"2026-07-11T00:47:53Z","type":"stable","version":"selenium-4.46.0"},{"url":"https://github.com/SeleniumHQ/selenium/releases/tag/selenium-4.45.0","date":"2026-06-16T13:59:48Z","type":"stable","version":"selenium-4.45.0"},{"url":"https://github.com/SeleniumHQ/selenium/releases/tag/selenium-4.44.0","date":"2026-05-12T23:58:59Z","type":"stable","version":"selenium-4.44.0"},{"url":"https://github.com/SeleniumHQ/selenium/releases/tag/selenium-4.43.0","date":"2026-04-10T06:52:53Z","type":"stable","version":"selenium-4.43.0"},{"url":"https://github.com/SeleniumHQ/selenium/releases/tag/selenium-4.42.0","date":"2026-04-09T11:53:47Z","type":"stable","version":"selenium-4.42.0"},{"url":"https://github.com/SeleniumHQ/selenium/releases/tag/selenium-4.41.0","date":"2026-02-20T15:57:35Z","type":"stable","version":"selenium-4.41.0"},{"url":"https://github.com/SeleniumHQ/selenium/releases/tag/selenium-4.40.0","date":"2026-01-18T23:53:16Z","type":"stable","version":"selenium-4.40.0"},{"url":"https://github.com/SeleniumHQ/selenium/releases/tag/selenium-4.39.0","date":"2025-12-06T22:53:26Z","type":"stable","version":"selenium-4.39.0"},{"url":"https://github.com/SeleniumHQ/selenium/releases/tag/selenium-4.38.0","date":"2025-10-25T05:01:29Z","type":"stable","version":"selenium-4.38.0"},{"url":"https://github.com/SeleniumHQ/selenium/releases/tag/selenium-4.37.0","date":"2025-10-18T05:02:55Z","type":"stable","version":"selenium-4.37.0"},{"url":"https://github.com/SeleniumHQ/selenium/releases/tag/selenium-4.36.0","date":"2025-10-02T15:37:23Z","type":"stable","version":"selenium-4.36.0"},{"url":"https://github.com/SeleniumHQ/selenium/releases/tag/selenium-4.35.0","date":"2025-08-12T15:44:30Z","type":"stable","version":"selenium-4.35.0"},{"url":"https://github.com/SeleniumHQ/selenium/releases/tag/selenium-4.34.0","date":"2025-06-29T18:25:54Z","type":"stable","version":"selenium-4.34.0"},{"url":"https://github.com/SeleniumHQ/selenium/releases/tag/selenium-4.33.0","date":"2025-05-23T17:42:58Z","type":"stable","version":"selenium-4.33.0"}]` | `[{"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 | 2.9 | 5 |
| security.trust_center | https://www.selenium.dev/categories/security/ | - |
| security.vulnerabilities | `{"count":0,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=maven&package_name=org.seleniumhq.selenium%3Aselenium-java&per_page=100","last_12m":0,"max_severity":null}` | `{"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 | Selenium | Testing Library |
|---|:--:|:--:|
| **Core** |  |  |
| Test types | Unit + integration + E2E | - |
| Browser automation | ✓ | ✗ |
| Built-in assertion library | - | ✓ |
| Languages | Java, JavaScript, Python, Ruby, .NET | JavaScript, TypeScript |
| **Isolation** |  |  |
| Mocking / stubbing | - | ✗ |
| **Techniques** |  |  |
| Snapshot testing | - | ✗ |
| **Performance** |  |  |
| Parallel execution | ✓ | ✗ |
| **Insight** |  |  |
| Code coverage | - | ✗ |
| **DX** |  |  |
| Watch mode | - | ✗ |
| **Ops** |  |  |
| CI integration | ✓ | ✓ |

*Source: vioscaleAI. Generated 2026-10-16T18:31:01.752Z. "-" = undocumented, not absent.*