# Locust vs Puppeteer

**Leader by vioscaleAI score:** Puppeteer

| Attribute | Locust | Puppeteer |
|---|---|---|
| **vioscaleAI score** | 57 (49% (low)) | 72.3 (66% (medium)) |
| activity.commits_last_30d | 53 | 74 |
| adoption.dependent_repos | 1,883 | 144,056 |
| adoption.github_stars | 28,210 | 95,682 |
| adoption.package_downloads_weekly | - | 11,510,272 |
| content.faq | `[{"answer":"A Python-based tool for performance testing that simulates thousands of concurrent users to stress-test web applications. Tests are written as plain Python code and can run distributed across multiple machines. It is indexed under Testing Tools.","source":"https://locust.io","question":"What is Locust?","confidence":0.6},{"answer":"Locust 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://locust.io","question":"Is Locust free to use?","confidence":0.6},{"answer":"Locust supports a command-line interface. Platforms we have not confirmed are simply not listed here rather than ruled out.","source":"https://locust.io","question":"What platforms does Locust support?","confidence":0.6},{"answer":"Yes. Locust can be deployed self-hosted, so it does not have to run on the vendor's infrastructure.","source":"https://locust.io","question":"Can Locust be self-hosted?","confidence":0.6},{"answer":"Yes. Locust 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/locustio/locust","question":"Is Locust open source?","confidence":0.95}]` | `[{"answer":"Puppeteer provides programmatic control over browser instances, enabling automated navigation, interaction, and inspection of web pages through a high-level API. It supports both Chrome and Firefox and runs in headless mode by default. It is indexed under Testing Tools.","source":"https://pptr.dev/","question":"What is Puppeteer?","confidence":0.6},{"answer":"Puppeteer 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://pptr.dev/","question":"Is Puppeteer free to use?","confidence":0.6},{"answer":"Puppeteer supports the web and a command-line interface. Platforms we have not confirmed are simply not listed here rather than ruled out.","source":"https://pptr.dev/","question":"What platforms does Puppeteer support?","confidence":0.6},{"answer":"Yes. Puppeteer can be deployed self-hosted, so it does not have to run on the vendor's infrastructure.","source":"https://pptr.dev/","question":"Can Puppeteer be self-hosted?","confidence":0.6},{"answer":"We have confirmed 4 integrations for Puppeteer, including Chrome, Firefox, DevTools Protocol and WebDriver BiDi. This is what we could verify from public sources, so the vendor may support others we have not indexed.","source":"https://pptr.dev/","question":"What does Puppeteer integrate with?","confidence":0.6},{"answer":"Yes. Puppeteer 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/puppeteer/puppeteer","question":"Is Puppeteer open source?","confidence":0.99}]` |
| deployment.options | `{"self_hosted":true}` | `{"self_hosted":true}` |
| description.long | An open-source framework for writing performance tests as regular Python code, supporting distributed testing across multiple machines with real-time progress monitoring and the ability to test HTTP and other protocols. | Provides programmatic control of Chrome and Firefox browsers for automation and testing through a JavaScript API. |
| features.capabilities | `{"languages":"Python","ci_integration":true,"browser_automation":true,"parallel_execution":true}` | `{"coverage":true,"protocol":"cdp","languages":"JavaScript","open_source":true,"headless_mode":true,"auto_wait_retry":true,"browser_automation":true}` |
| integrations.count | 4 | 5 |
| integrations.list | `[{"name":"Azure Load Testing","native":true,"category":"testing"},{"name":"Azure DevOps","native":true,"category":"ci"},{"name":"GitHub","native":true,"category":"ci"},{"name":"VS Code","native":true}]` | `[{"name":"Chrome"},{"name":"Firefox"},{"name":"DevTools Protocol"},{"name":"WebDriver BiDi"},{"name":"chrome-devtools-mcp"}]` |
| language.primary | Python | TypeScript |
| license.spdx | MIT | Apache-2.0 |
| platform.support | `{"cli":true,"web":true}` | `{"cli":true,"web":true}` |
| pricing | `{"type":"open_source","freeTier":true,"sourceUrl":"https://locust.io","retrievedAt":"2026-08-16T21:32:24.662Z"}` | `{"type":"open_source","sourceUrl":"https://pptr.dev/","retrievedAt":"2026-09-10T16:07:42.951Z"}` |
| pricing.free_tier | yes | yes |
| pricing.model | commercial | open_source |
| pricing.price_level | free | free |
| pricing.transparent | yes | yes |
| release.cadence_days | 13 | - |
| release.history | `[{"url":"https://github.com/locustio/locust/releases/tag/2.46.7","date":"2026-10-04T20:14:09Z","type":"stable","version":"2.46.7"},{"url":"https://github.com/locustio/locust/releases/tag/2.46.6","date":"2026-09-17T17:37:05Z","type":"stable","version":"2.46.6"},{"url":"https://github.com/locustio/locust/releases/tag/2.46.5","date":"2026-09-07T06:44:43Z","type":"stable","version":"2.46.5"},{"url":"https://github.com/locustio/locust/releases/tag/2.46.4","date":"2026-08-23T11:40:06Z","type":"stable","version":"2.46.4"},{"url":"https://github.com/locustio/locust/releases/tag/2.46.3","date":"2026-08-01T10:10:38Z","type":"stable","version":"2.46.3"},{"url":"https://github.com/locustio/locust/releases/tag/2.46.2","date":"2026-07-24T19:57:38Z","type":"stable","version":"2.46.2"},{"url":"https://github.com/locustio/locust/releases/tag/2.46.1","date":"2026-07-21T18:53:03Z","type":"stable","version":"2.46.1"},{"url":"https://github.com/locustio/locust/releases/tag/2.46.0","date":"2026-07-19T14:29:10Z","type":"stable","version":"2.46.0"},{"url":"https://github.com/locustio/locust/releases/tag/2.45.0","date":"2026-07-09T08:10:23Z","type":"stable","version":"2.45.0"},{"url":"https://github.com/locustio/locust/releases/tag/2.44.4","date":"2026-06-18T12:24:58Z","type":"stable","version":"2.44.4"},{"url":"https://github.com/locustio/locust/releases/tag/2.44.3","date":"2026-06-12T10:57:24Z","type":"stable","version":"2.44.3"},{"url":"https://github.com/locustio/locust/releases/tag/2.44.2","date":"2026-06-12T10:39:49Z","type":"stable","version":"2.44.2"},{"url":"https://github.com/locustio/locust/releases/tag/2.44.1","date":"2026-06-01T22:32:28Z","type":"stable","version":"2.44.1"},{"url":"https://github.com/locustio/locust/releases/tag/2.44.0","date":"2026-05-11T20:31:38Z","type":"stable","version":"2.44.0"},{"url":"https://github.com/locustio/locust/releases/tag/2.43.4","date":"2026-04-01T20:32:51Z","type":"stable","version":"2.43.4"},{"url":"https://github.com/locustio/locust/releases/tag/2.43.3","date":"2026-02-12T09:46:25Z","type":"stable","version":"2.43.3"},{"url":"https://github.com/locustio/locust/releases/tag/2.43.2","date":"2026-02-01T10:45:39Z","type":"stable","version":"2.43.2"},{"url":"https://github.com/locustio/locust/releases/tag/2.43.1","date":"2026-01-12T19:21:45Z","type":"stable","version":"2.43.1"},{"url":"https://github.com/locustio/locust/releases/tag/2.43.0","date":"2025-12-30T08:49:59Z","type":"stable","version":"2.43.0"},{"url":"https://github.com/locustio/locust/releases/tag/2.42.6","date":"2025-11-29T17:31:00Z","type":"stable","version":"2.42.6"}]` | `[{"url":"https://github.com/puppeteer/puppeteer/releases/tag/puppeteer-v25.13.0","date":"2026-10-08T13:00:00Z","type":"stable","version":"puppeteer-v25.13.0"},{"url":"https://github.com/puppeteer/puppeteer/releases/tag/puppeteer-core-v25.13.0","date":"2026-10-08T13:00:01Z","type":"stable","version":"puppeteer-core-v25.13.0"},{"url":"https://github.com/puppeteer/puppeteer/releases/tag/browsers-v3.2.4","date":"2026-10-08T13:00:03Z","type":"stable","version":"browsers-v3.2.4"},{"url":"https://github.com/puppeteer/puppeteer/releases/tag/puppeteer-v25.12.0","date":"2026-09-23T12:52:04Z","type":"stable","version":"puppeteer-v25.12.0"},{"url":"https://github.com/puppeteer/puppeteer/releases/tag/puppeteer-core-v25.12.0","date":"2026-09-23T12:52:05Z","type":"stable","version":"puppeteer-core-v25.12.0"},{"url":"https://github.com/puppeteer/puppeteer/releases/tag/browsers-v3.2.3","date":"2026-09-23T12:52:06Z","type":"stable","version":"browsers-v3.2.3"},{"url":"https://github.com/puppeteer/puppeteer/releases/tag/puppeteer-v25.11.0","date":"2026-09-14T08:59:59Z","type":"stable","version":"puppeteer-v25.11.0"},{"url":"https://github.com/puppeteer/puppeteer/releases/tag/puppeteer-core-v25.11.0","date":"2026-09-14T09:00:00Z","type":"stable","version":"puppeteer-core-v25.11.0"},{"url":"https://github.com/puppeteer/puppeteer/releases/tag/puppeteer-v25.10.0","date":"2026-09-03T13:06:55Z","type":"stable","version":"puppeteer-v25.10.0"},{"url":"https://github.com/puppeteer/puppeteer/releases/tag/puppeteer-core-v25.10.0","date":"2026-09-03T13:06:56Z","type":"stable","version":"puppeteer-core-v25.10.0"},{"url":"https://github.com/puppeteer/puppeteer/releases/tag/browsers-v3.2.2","date":"2026-09-03T13:06:58Z","type":"stable","version":"browsers-v3.2.2"},{"url":"https://github.com/puppeteer/puppeteer/releases/tag/puppeteer-v25.9.0","date":"2026-08-25T07:40:50Z","type":"stable","version":"puppeteer-v25.9.0"},{"url":"https://github.com/puppeteer/puppeteer/releases/tag/puppeteer-core-v25.9.0","date":"2026-08-25T07:40:51Z","type":"stable","version":"puppeteer-core-v25.9.0"},{"url":"https://github.com/puppeteer/puppeteer/releases/tag/puppeteer-v25.8.0","date":"2026-08-17T09:12:45Z","type":"stable","version":"puppeteer-v25.8.0"},{"url":"https://github.com/puppeteer/puppeteer/releases/tag/puppeteer-core-v25.8.0","date":"2026-08-17T09:12:46Z","type":"stable","version":"puppeteer-core-v25.8.0"},{"url":"https://github.com/puppeteer/puppeteer/releases/tag/browsers-v3.2.1","date":"2026-08-17T09:12:47Z","type":"stable","version":"browsers-v3.2.1"},{"url":"https://github.com/puppeteer/puppeteer/releases/tag/puppeteer-v25.7.0","date":"2026-08-13T18:40:18Z","type":"stable","version":"puppeteer-v25.7.0"},{"url":"https://github.com/puppeteer/puppeteer/releases/tag/puppeteer-core-v25.7.0","date":"2026-08-13T18:40:19Z","type":"stable","version":"puppeteer-core-v25.7.0"},{"url":"https://github.com/puppeteer/puppeteer/releases/tag/puppeteer-v25.6.0","date":"2026-08-11T13:11:24Z","type":"stable","version":"puppeteer-v25.6.0"},{"url":"https://github.com/puppeteer/puppeteer/releases/tag/puppeteer-core-v25.6.0","date":"2026-08-11T13:11:26Z","type":"stable","version":"puppeteer-core-v25.6.0"}]` |
| security.scorecard | 6.3 | 7.9 |
| security.vulnerabilities | `{"count":1,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=pypi&package_name=locust&per_page=100","last_12m":0,"max_severity":"MODERATE"}` | `{"count":1,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=npm&package_name=puppeteer&per_page=100","last_12m":0,"max_severity":"MODERATE"}` |

## Capabilities (Testing Tools)

| Capability | Locust | Puppeteer |
|---|:--:|:--:|
| **Core** |  |  |
| Test types | - | - |
| Browser automation | ✓ | ✓ |
| Built-in assertion library | - | - |
| Languages | Python | JavaScript |
| **Isolation** |  |  |
| Mocking / stubbing | - | - |
| **Techniques** |  |  |
| Snapshot testing | - | - |
| **Performance** |  |  |
| Parallel execution | ✓ | - |
| **Insight** |  |  |
| Code coverage | - | ✓ |
| **DX** |  |  |
| Watch mode | - | - |
| **Ops** |  |  |
| CI integration | ✓ | - |

*Source: vioscaleAI. Generated 2026-10-16T19:06:05.390Z. "-" = undocumented, not absent.*