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Best OpenAPI Studio Alternatives in 2026

Updated

20 apps from API design tools ranked against OpenAPI Studio on the same published basis.

  1. 1
    Apidog Free plan apiextensionLinuxMacself-hosted $9/mo6.7
    OpenAPI Studio vs Apidog
  2. 2
    Microcks Free plan apiextensionLinuxMacself-hosted Free6.7
    OpenAPI Studio vs Microcks
  3. 3
    Apollo Studio Free plan apiLinuxMacself-hostedWeb $5/mo6.6
    OpenAPI Studio vs Apollo Studio
  4. 4
    MockServer Free plan apiLinuxMacself-hostedWeb Free6.6
    OpenAPI Studio vs MockServer
  5. 5
    oasdiff Free plan apiLinuxMacself-hostedWeb $100/mo6.6
    OpenAPI Studio vs oasdiff
  6. 6
    Pact Free plan apiLinuxMacself-hostedWin $115.42/mo6.6
    OpenAPI Studio vs Pact
  7. 7
    Postman Free plan extensionLinuxMacWebWin $9/mo6.6
    OpenAPI Studio vs Postman
  8. 8
    TypeSpec Free plan extensionLinuxMacWebWin Free6.6
    OpenAPI Studio vs TypeSpec
  9. 9
    WireMock Free plan apiLinuxMacself-hostedWeb Free6.6
    OpenAPI Studio vs WireMock
  10. 10
    Schemathesis Free plan LinuxMacself-hostedWin Free6.5
    OpenAPI Studio vs Schemathesis
  11. 11
    GraphQL Hive Free plan apiself-hostedWeb $20/mo6.4
    OpenAPI Studio vs GraphQL Hive
  12. 13
    PactFlow Free plan apiself-hostedWeb $115.42/mo6.4
    OpenAPI Studio vs PactFlow
  13. 14
    Stoplight Elements Free plan self-hostedWeb Free6.4
    OpenAPI Studio vs Stoplight Elements
  14. 15
    Swagger Editor Free plan self-hostedWeb Free6.4
    OpenAPI Studio vs Swagger Editor
  15. 16
    SwaggerHub Free plan self-hostedWeb $61.67/mo6.4
    OpenAPI Studio vs SwaggerHub
  16. 17
    Mockoon Free trial apiLinuxMacself-hostedWeb €10/mo5.6
    OpenAPI Studio vs Mockoon
  17. 18
    Redocly Free trial apiextensionWeb $10/mo5.5
    OpenAPI Studio vs Redocly
  18. 19
    Smithy LinuxMacWin 5.2
    OpenAPI Studio vs Smithy
  19. 20
    WSO2 API Designer Free trial extensionLinuxMacWebWin $119/mo5.2
    OpenAPI Studio vs WSO2 API Designer
  20. 21
    vacuum apiextensionLinuxMacself-hosted 5.1
    OpenAPI Studio vs vacuum

OpenAPI Studio alternatives compared

#AppScoreFree planFromRuns on
1Apidog6.7Free plan$9/moAPI, Browser, Linux, Mac, self-hosted, Web, Windows
2Microcks6.7Free planFreeAPI, Browser, Linux, Mac, self-hosted, Web, Windows
3Apollo Studio6.6Free plan$5/moAPI, Linux, Mac, self-hosted, Web, Windows
4MockServer6.6Free planFreeAPI, Linux, Mac, self-hosted, Web, Windows
5oasdiff6.6Free plan$100/moAPI, Linux, Mac, self-hosted, Web, Windows
6Pact6.6Free plan$115.42/moAPI, Linux, Mac, self-hosted, Windows
7Postman6.6Free plan$9/moBrowser, Linux, Mac, Web, Windows
8TypeSpec6.6Free planFreeBrowser, Linux, Mac, Web, Windows
9WireMock6.6Free planFreeAPI, Linux, Mac, self-hosted, Web, Windows
10Schemathesis6.5Free planFreeLinux, Mac, self-hosted, Windows
11GraphQL Hive6.4Free plan$20/moAPI, self-hosted, Web
13PactFlow6.4Free plan$115.42/moAPI, self-hosted, Web
14Stoplight Elements6.4Free planFreeself-hosted, Web
15Swagger Editor6.4Free planFreeself-hosted, Web
16SwaggerHub6.4Free plan$61.67/moself-hosted, Web
17Mockoon5.6No€10/moAPI, Linux, Mac, self-hosted, Web, Windows
18Redocly5.5No$10/moAPI, Browser, Web
19Smithy5.2No—Linux, Mac, Windows
20WSO2 API Designer5.2No$119/moBrowser, Linux, Mac, Web, Windows
21vacuum5.1No—API, Browser, Linux, Mac, self-hosted, Windows
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Questions about OpenAPI Studio alternatives

What is the best alternative to OpenAPI Studio?

Apidog, number 1 in API design tools with a score of 6.7 out of 10. The others here: Microcks, Apollo Studio, MockServer and 16 more.

What is the best free alternative to OpenAPI Studio?

Apidog is the best-ranked alternative with a free plan. 15 of the 20 alternatives here publish a free plan on their own pricing pages.

How are these alternatives ranked?

Ranked free-and-open first: a usable free tier and open-source code, then the platforms it runs on and its documentation.