# Mock Service Worker (MSW) vs Mockoon

**Leader by Vioscale score:** Mockoon

| Attribute | Mock Service Worker (MSW) | Mockoon |
|---|---|---|
| **Vioscale score** | 58.1 (81% (high)) | 71.1 (74% (medium)) |
| adoption.dependent_repos | 11,851 | - |
| adoption.github_stars | 18,168 | - |
| deployment.options | - | `{"cloud":true,"hybrid":true,"on_prem":true,"self_hosted":true}` |
| description.long | An API mocking library that intercepts network requests at the browser and Node.js levels, allowing consistent mock responses across testing frameworks, tools, and applications without requiring client-specific stubs or configuration. | A tool for creating and testing mock REST APIs with an intuitive desktop interface, command-line tools, and cloud collaboration options. It supports advanced features like dynamic templating, request rules, webhooks, and serverless deployment. |
| integrations.count | 8 | 8 |
| integrations.list | `[{"name":"Vitest"},{"name":"Playwright"},{"name":"Storybook"},{"name":"React Native"},{"name":"Express"},{"name":"fetch"},{"name":"axios"},{"name":"react-query"}]` | `[{"name":"OpenAPI"},{"name":"AWS Lambda"},{"name":"Google Cloud Functions"},{"name":"Firebase Functions"},{"name":"GitHub Actions"},{"name":"CircleCI"},{"name":"Travis CI"},{"name":"Docker"}]` |
| language.primary | TypeScript | - |
| license.spdx | MIT | - |
| market.availability | `{"primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` | `{"primaryMarkets":["US","EU"],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` |
| platform.support | `{"cli":true,"web":true}` | `{"cli":true,"mac":true,"web":true,"linux":true,"windows":true}` |
| pricing | `{"type":"open_source","freeTier":true,"sourceUrl":"https://mswjs.io","retrievedAt":"2026-08-17T21:32:17.412Z"}` | `{"type":"hybrid","plans":[{"free":false,"name":"Team","summary":"$100/month billed annually (saves 30% vs monthly)","features":["All open-source features (unlimited mocking, CLI, OpenAPI support, webhooks, serverless compatibility)","Cloud deployment and hosting","Web application access","Real-time team collaboration","Cloud data synchronization across devices","Team-level role-based access control","200 AI-generated endpoints per month per user","Next business day support","99.9% uptime SLA (target)","30-day audit trail retention"],"minSeats":5,"commitment":"annual","components":[{"kind":"fixed","amount":100,"period":"month","currency":"USD"}],"description":"For small teams and companies","contactSales":false,"includedLimits":{"api_mocks":"3","team_members":"5","monthly_calls":"100,000","api_mock_max_size":"30MB","request_rate_limit":"10 req/sec","ai_endpoints_per_month_per_user":"200"}},{"free":false,"name":"Enterprise","summary":"Custom pricing","features":["All Team plan features","Custom quotas and limits","Optional dedicated instances","Custom cloud region selection","Enterprise-grade support with custom SLA","Dedicated customer success manager","Custom payment options (PO and invoicing)","1-year audit trail retention"],"description":"For large teams and organizations with advanced needs","contactSales":true}],"summary":"Free open-source desktop and CLI. Team plan from $100/month (annual). Enterprise with custom pricing.","currency":"USD","freeTier":true,"sourceUrl":"https://mockoon.com/pricing/","retrievedAt":"2026-08-18T12:19:43.994Z","freeTrialDays":14,"startingPrice":{"amount":100,"period":"month","currency":"USD"},"billingPeriods":["month","year"]}` |
| pricing.free_tier | yes | yes |
| pricing.model | commercial | freemium |
| pricing.price_level | free | high |
| pricing.transparent | - | yes |
| release.cadence_days | 2 | - |
| release.history | `[{"url":"https://github.com/mswjs/msw/releases/tag/v2.15.0","date":"2026-07-08T01:43:13Z","type":"stable","version":"v2.15.0"},{"url":"https://github.com/mswjs/msw/releases/tag/v2.14.7","date":"2026-07-07T18:24:49Z","type":"stable","version":"v2.14.7"},{"url":"https://github.com/mswjs/msw/releases/tag/v2.14.6","date":"2026-05-11T09:41:54Z","type":"stable","version":"v2.14.6"},{"url":"https://github.com/mswjs/msw/releases/tag/v2.14.5","date":"2026-05-08T01:51:55Z","type":"stable","version":"v2.14.5"},{"url":"https://github.com/mswjs/msw/releases/tag/v2.14.4","date":"2026-05-07T12:26:03Z","type":"stable","version":"v2.14.4"},{"url":"https://github.com/mswjs/msw/releases/tag/v2.14.3","date":"2026-05-04T17:14:11Z","type":"stable","version":"v2.14.3"},{"url":"https://github.com/mswjs/msw/releases/tag/v2.14.2","date":"2026-04-29T15:37:39Z","type":"stable","version":"v2.14.2"},{"url":"https://github.com/mswjs/msw/releases/tag/v2.14.1","date":"2026-04-29T15:11:07Z","type":"stable","version":"v2.14.1"},{"url":"https://github.com/mswjs/msw/releases/tag/v2.14.0","date":"2026-04-29T14:12:53Z","type":"stable","version":"v2.14.0"},{"url":"https://github.com/mswjs/msw/releases/tag/v2.13.6","date":"2026-04-24T15:53:44Z","type":"stable","version":"v2.13.6"},{"url":"https://github.com/mswjs/msw/releases/tag/v2.13.5","date":"2026-04-23T01:46:05Z","type":"stable","version":"v2.13.5"},{"url":"https://github.com/mswjs/msw/releases/tag/v2.13.4","date":"2026-04-16T16:25:47Z","type":"stable","version":"v2.13.4"},{"url":"https://github.com/mswjs/msw/releases/tag/v2.13.3","date":"2026-04-14T01:44:10Z","type":"stable","version":"v2.13.3"},{"url":"https://github.com/mswjs/msw/releases/tag/v2.13.2","date":"2026-04-08T11:18:18Z","type":"stable","version":"v2.13.2"},{"url":"https://github.com/mswjs/msw/releases/tag/v2.13.1","date":"2026-04-07T18:14:15Z","type":"stable","version":"v2.13.1"},{"url":"https://github.com/mswjs/msw/releases/tag/v2.13.0","date":"2026-04-06T12:37:48Z","type":"stable","version":"v2.13.0"},{"url":"https://github.com/mswjs/msw/releases/tag/v2.12.14","date":"2026-03-21T01:42:04Z","type":"stable","version":"v2.12.14"},{"url":"https://github.com/mswjs/msw/releases/tag/v2.12.13","date":"2026-03-17T11:36:51Z","type":"stable","version":"v2.12.13"},{"url":"https://github.com/mswjs/msw/releases/tag/v2.12.12","date":"2026-03-17T01:42:36Z","type":"stable","version":"v2.12.12"},{"url":"https://github.com/mswjs/msw/releases/tag/v2.12.11","date":"2026-03-15T19:07:45Z","type":"stable","version":"v2.12.11"}]` | - |
| reliability.sla_pct | - | 99.9 |
| reliability.status_page | - | yes |
| security.disclosure_policy | - | yes |
| security.scorecard | 6.2 | - |
| security.vulnerabilities | `{"count":0,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=npm&package_name=msw&per_page=100","last_12m":0,"max_severity":null}` | - |

## Capabilities (API Mocking)

| Capability | Mock Service Worker (MSW) | Mockoon |
|---|:--:|:--:|
| **Capabilities** |  |  |
| Mocking mode | - | - |
| Stateful scenarios | - | - |
| Fault chaos injection | - | - |
| Openapi import | - | - |
| Proxy passthrough | - | - |
| Admin API | - | - |
| Deployment | - | - |
| Legacy protocol virtualization | - | - |
| Collaboration sharing | - | - |
| Ci cd integration | - | - |
| Open source | - | - |
| Market segment | - | - |
| Pricing model | - | - |

*Source: Vioscale. Generated 2026-09-01T16:46:36.795Z. "-" = undocumented, not absent.*