# json-server vs Parasoft Virtualize

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

| Attribute | json-server | Parasoft Virtualize |
|---|---|---|
| **vioscaleAI score** | 62.5 (64% (medium)) | 50.4 (19% (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":"A codeless tool that creates virtual versions of APIs and services for testing across 120+ protocols and message formats, with AI-powered mock generation and stateful simulation capabilities It is indexed under API Mocking.","source":"https://www.parasoft.com/products/parasoft-virtualize/","question":"What is Parasoft Virtualize?","confidence":0.6},{"answer":"We have confirmed browser-based access to Parasoft Virtualize. That is the extent of what we could verify from public sources, so it may well offer desktop or mobile clients we have not indexed.","source":"https://www.parasoft.com/products/parasoft-virtualize/","question":"What platforms does Parasoft Virtualize support?","confidence":0.6},{"answer":"We have confirmed 11 integrations for Parasoft Virtualize, including REST, SOAP, JMS, MQ, JDBC, Kafka, gRPC and Jenkins, plus 3 more. This is what we could verify from public sources, so the vendor may support others we have not indexed.","source":"https://www.parasoft.com/products/parasoft-virtualize/","question":"What does Parasoft Virtualize integrate with?","confidence":0.6},{"answer":"Parasoft Virtualize is available worldwide. The vendor is headquartered in the United States.","source":"https://www.parasoft.com/products/parasoft-selenic/plans-pricing/","question":"Where is Parasoft Virtualize available?","confidence":0.75}]` |
| deployment.options | `{"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. | Parasoft Virtualize provides a codeless platform for creating simulated API and service dependencies across 120+ protocols. Teams can generate lightweight API mocks or stateful virtual services for testing, with direct integration into CI/CD pipelines and support for AI-driven workflows. |
| features.capabilities | `{"deployment":"cli_binary","open_source":true,"mocking_mode":"static","pricing_model":"open_source","market_segment":"dev-tool"}` | `{"deployment":"browser","mocking_mode":"dynamic_templating","market_segment":"dev-tool","ci_cd_integration":true,"proxy_passthrough":true,"stateful_scenarios":true,"fault_chaos_injection":true,"legacy_protocol_virtualization":true}` |
| integrations.count | - | 11 |
| integrations.list | - | `[{"name":"REST"},{"name":"SOAP"},{"name":"JMS"},{"name":"MQ"},{"name":"JDBC"},{"name":"Kafka"},{"name":"gRPC"},{"name":"Jenkins"},{"name":"Azure DevOps"},{"name":"TeamCity"},{"name":"Bamboo"}]` |
| language.primary | JavaScript | - |
| license.spdx | MIT | - |
| market.availability | - | `{"hqCountry":"US","primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` |
| platform.support | `{"cli":true,"web":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"}` | - |
| pricing.free_tier | yes | - |
| pricing.model | open_source | commercial |
| pricing.price_level | 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 | https://www.parasoft.com/blog/iso-pas-8800-compliance/ |
| 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 | Parasoft Virtualize |
|---|:--:|:--:|
| **Capabilities** |  |  |
| Mocking mode | Static | Dynamic templating |
| Stateful scenarios | - | ✓ |
| Fault chaos injection | - | ✓ |
| Openapi import | - | - |
| Proxy passthrough | - | ✓ |
| Admin API | - | - |
| Deployment | CLI binary | Browser |
| Legacy protocol virtualization | - | ✓ |
| Collaboration sharing | - | - |
| Ci cd integration | - | ✓ |
| Open source | ✓ | - |
| Market segment | Dev tool | Dev tool |
| Pricing model | Open source | - |

*Source: vioscaleAI. Generated 2026-10-16T18:58:43.414Z. "-" = undocumented, not absent.*