# json-server vs WireMock

**Leader by vioscaleAI score:** json-server

| Attribute | json-server | WireMock |
|---|---|---|
| **vioscaleAI score** | 62.5 (64% (medium)) | 55.4 (17% (low)) |
| adoption.dependent_repos | 85,674 | - |
| adoption.github_stars | 75,731 | - |
| content.faq | `[{"answer":"An open-source tool that generates a full-featured REST API server from a JSON or JSON5 file, enabling rapid prototyping and testing without backend development. It is indexed under API Mocking.","source":"https://github.com/pricing","question":"What is json-server?","confidence":0.6},{"answer":"json-server 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://github.com/pricing","question":"Is json-server free to use?","confidence":0.6},{"answer":"json-server supports the web and a command-line interface. Platforms we have not confirmed are simply not listed here rather than ruled out.","source":"https://github.com/pricing","question":"What platforms does json-server support?","confidence":0.6},{"answer":"Yes. json-server can be deployed self-hosted, so it does not have to run on the vendor's infrastructure.","source":"https://github.com/pricing","question":"Can json-server be self-hosted?","confidence":0.6},{"answer":"Yes. json-server 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/typicode/json-server","question":"Is json-server open source?","confidence":0.95}]` | `[{"answer":"An open-source platform that lets developers build mock APIs for testing applications in isolation. It records interactions with real services for replay, creates stateful mock scenarios, supports fault injection, and tests multiple protocols, enabling faster and safer development cycles. It is indexed under API Mocking.","source":"https://wiremock.org","question":"What is WireMock?","confidence":0.6},{"answer":"WireMock offers a free tier, so you can start without paying. Pricing changes often, so verify at source before relying on it.","source":"https://wiremock.org","question":"Is WireMock free?","confidence":0.6},{"answer":"WireMock supports the web and a command-line interface. Platforms we have not confirmed are simply not listed here rather than ruled out.","source":"https://wiremock.org","question":"What platforms does WireMock support?","confidence":0.6},{"answer":"Yes. WireMock can be deployed cloud / SaaS, hybrid and self-hosted, so it does not have to run on the vendor's infrastructure.","source":"https://wiremock.org","question":"Can WireMock be self-hosted?","confidence":0.6},{"answer":"We have confirmed 8 integrations for WireMock, including JUnit, Spring Boot, Testcontainers, Docker, Maven, Gradle, OpenAPI and gRPC. This is what we could verify from public sources, so the vendor may support others we have not indexed.","source":"https://wiremock.org","question":"What does WireMock integrate with?","confidence":0.6}]` |
| deployment.options | `{"self_hosted":true}` | `{"on_prem":true,"self_hosted":true}` |
| description.long | An open-source tool that generates a full-featured REST API server from a JSON or JSON5 file, enabling rapid prototyping and testing without backend development. | Enables developers to test client applications against mock APIs without relying on external services, supporting various protocols like REST, SOAP, and OAuth2. |
| features.capabilities | `{"deployment":"cli_binary","open_source":true,"mocking_mode":"static","pricing_model":"open_source","market_segment":"dev-tool"}` | `{"admin_api":true,"open_source":true,"mocking_mode":"dynamic_templating","pricing_model":"freemium","market_segment":"dev-tool","openapi_import":true,"ci_cd_integration":true,"stateful_scenarios":true,"collaboration_sharing":true,"fault_chaos_injection":true,"legacy_protocol_virtualization":true}` |
| integrations.count | - | 5 |
| integrations.list | - | `[{"name":"JUnit"},{"name":"Spring Boot"},{"name":"Testcontainers"},{"name":"Docker"},{"name":"Maven"},{"name":"Gradle"},{"name":"OpenAPI","native":true,"direction":"bidirectional"},{"name":"gRPC","native":true}]` |
| language.primary | JavaScript | - |
| license.spdx | MIT | - |
| market.availability | - | `{"primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` |
| platform.support | `{"cli":true,"web":true}` | `{"cli":true,"web":true}` |
| pricing | `{"type":"open_source","summary":"Free, open-source","freeTier":true,"sourceUrl":"https://github.com/pricing","retrievedAt":"2026-08-17T21:30:41.016Z"}` | `{"type":"open_source","freeTier":true,"sourceUrl":"https://wiremock.org","retrievedAt":"2026-09-23T15:51:20.750Z"}` |
| pricing.free_tier | yes | yes |
| pricing.model | open_source | open_source |
| pricing.price_level | free | free |
| pricing.transparent | yes | - |
| release.cadence_days | 6 | - |
| release.history | `[{"url":"https://github.com/typicode/json-server/releases/tag/v1.0.0-beta.15","date":"2026-03-23T19:40:05Z","type":"stable","version":"v1.0.0-beta.15"},{"url":"https://github.com/typicode/json-server/releases/tag/v1.0.0-beta.14","date":"2026-03-20T15:15:06Z","type":"stable","version":"v1.0.0-beta.14"},{"url":"https://github.com/typicode/json-server/releases/tag/v1.0.0-beta.13","date":"2026-03-13T00:36:40Z","type":"stable","version":"v1.0.0-beta.13"},{"url":"https://github.com/typicode/json-server/releases/tag/v1.0.0-beta.12","date":"2026-02-28T00:44:28Z","type":"stable","version":"v1.0.0-beta.12"},{"url":"https://github.com/typicode/json-server/releases/tag/v1.0.0-beta.10","date":"2026-02-26T22:49:44Z","type":"stable","version":"v1.0.0-beta.10"},{"url":"https://github.com/typicode/json-server/releases/tag/v1.0.0-beta.9","date":"2026-02-19T23:37:59Z","type":"stable","version":"v1.0.0-beta.9"},{"url":"https://github.com/typicode/json-server/releases/tag/v1.0.0-beta.8","date":"2026-02-19T23:08:52Z","type":"stable","version":"v1.0.0-beta.8"},{"url":"https://github.com/typicode/json-server/releases/tag/v1.0.0-beta.7","date":"2026-02-19T22:46:20Z","type":"stable","version":"v1.0.0-beta.7"},{"url":"https://github.com/typicode/json-server/releases/tag/v1.0.0-beta.6","date":"2026-02-14T22:48:17Z","type":"stable","version":"v1.0.0-beta.6"},{"url":"https://github.com/typicode/json-server/releases/tag/v1.0.0-beta.5","date":"2026-01-22T09:26:14Z","type":"stable","version":"v1.0.0-beta.5"},{"url":"https://github.com/typicode/json-server/releases/tag/v1.0.0-beta.4","date":"2026-01-21T22:57:31Z","type":"stable","version":"v1.0.0-beta.4"},{"url":"https://github.com/typicode/json-server/releases/tag/v1.0.0-beta.3","date":"2024-09-24T13:21:29Z","type":"stable","version":"v1.0.0-beta.3"},{"url":"https://github.com/typicode/json-server/releases/tag/v1.0.0-beta.2","date":"2024-08-19T13:12:26Z","type":"stable","version":"v1.0.0-beta.2"},{"url":"https://github.com/typicode/json-server/releases/tag/v1.0.0-beta.1","date":"2024-06-04T10:10:16Z","type":"stable","version":"v1.0.0-beta.1"},{"url":"https://github.com/typicode/json-server/releases/tag/v1.0.0-beta.0","date":"2024-05-13T13:29:13Z","type":"stable","version":"v1.0.0-beta.0"},{"url":"https://github.com/typicode/json-server/releases/tag/v1.0.0-alpha.23","date":"2024-01-26T17:34:24Z","type":"stable","version":"v1.0.0-alpha.23"},{"url":"https://github.com/typicode/json-server/releases/tag/v1.0.0-alpha.22","date":"2024-01-22T15:08:04Z","type":"stable","version":"v1.0.0-alpha.22"},{"url":"https://github.com/typicode/json-server/releases/tag/v1.0.0-alpha.21","date":"2024-01-13T22:50:00Z","type":"stable","version":"v1.0.0-alpha.21"},{"url":"https://github.com/typicode/json-server/releases/tag/v1.0.0-alpha.20","date":"2024-01-13T01:43:42Z","type":"stable","version":"v1.0.0-alpha.20"},{"url":"https://github.com/typicode/json-server/releases/tag/v1.0.0-alpha.19","date":"2024-01-12T00:10:55Z","type":"stable","version":"v1.0.0-alpha.19"}]` | - |
| security.scorecard | 3.6 | - |
| security.trust_center | https://github.com/security | - |
| security.vulnerabilities | `{"count":0,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=npm&package_name=json-server&per_page=100","last_12m":0,"max_severity":null}` | - |

## Capabilities (API Mocking)

| Capability | json-server | WireMock |
|---|:--:|:--:|
| **Capabilities** |  |  |
| Mocking mode | Static | Dynamic templating |
| Stateful scenarios | - | ✓ |
| Fault chaos injection | - | ✓ |
| Openapi import | - | ✓ |
| Proxy passthrough | - | - |
| Admin API | - | ✓ |
| Deployment | CLI binary | - |
| Legacy protocol virtualization | - | ✓ |
| Collaboration sharing | - | ✓ |
| Ci cd integration | - | ✓ |
| Open source | ✓ | ✓ |
| Market segment | Dev tool | Dev tool |
| Pricing model | Open source | Freemium |

*Source: vioscaleAI. Generated 2026-10-16T19:14:55.869Z. "-" = undocumented, not absent.*