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Best Mock Service Worker Alternatives in 2026

Updated

20 apps from API mocking tools ranked against Mock Service Worker on the same published basis.

  1. 1
    Parasoft SOAtest Free trial AndroidapiiOSLinuxMac 7.3
    Mock Service Worker vs Parasoft SOAtest
  2. 2
    Knockout API Free plan apiWeb $0.02/mo6.4
    Mock Service Worker vs Knockout API
  3. 3
    Microcks Free plan apiextensionLinuxMacself-hosted Free6.4
    Mock Service Worker vs Microcks
  4. 4
    Mockfly Free plan apiextensionLinuxself-hostedWeb €15/mo6.4
    Mock Service Worker vs Mockfly
  5. 5
    Mockzilla Free plan apiLinuxMacself-hostedWeb $10/mo6.4
    Mock Service Worker vs Mockzilla
  6. 6
    MockAPI Free plan apiWeb $2.92/mo6.3
    Mock Service Worker vs MockAPI
  7. 7
    Mockttp Free plan LinuxMacself-hostedWebWin Free6.3
    Mock Service Worker vs Mockttp
  8. 8
    moqapi.dev Free plan apiWeb $29/mo6.3
    Mock Service Worker vs moqapi.dev
  9. 9
    WireMock Free plan apiLinuxself-hostedWeb Free6.3
    Mock Service Worker vs WireMock
  10. 10
    json-server Free plan apiself-hosted Free6.2
    Mock Service Worker vs json-server
  11. 11
    MockServer Free plan apiLinuxMacself-hostedWeb Free6.2
    Mock Service Worker vs MockServer
  12. 12
    MockWebServer Free plan Free6.2
    Mock Service Worker vs MockWebServer
  13. 13
    Stoplight Elements Free plan self-hostedWeb Free6.2
    Mock Service Worker vs Stoplight Elements
  14. 14
    WireMock Free plan apiLinuxMacself-hostedWeb Free6.2
    Mock Service Worker vs WireMock
  15. 15
    Imposter LinuxMacself-hostedWin 5.8
    Mock Service Worker vs Imposter
  16. 17
    OpenAPI Mock Linuxself-hostedWin 5.8
    Mock Service Worker vs OpenAPI Mock
  17. 18
    OpenAPI Server apiself-hosted 5.8
    Mock Service Worker vs OpenAPI Server
  18. 19
    Mocki Free trial apiself-hostedWeb $15/mo5.7
    Mock Service Worker vs Mocki
  19. 20
    Mockoon Free trial apiLinuxMacself-hostedWeb €10/mo5.7
    Mock Service Worker vs Mockoon
  20. 21
    API-Mocked self-hosted 5.6
    Mock Service Worker vs API-Mocked

Mock Service Worker alternatives compared

#AppScoreFree planFromRuns on
1Parasoft SOAtest7.3No—Android, API, iOS, Linux, Mac, self-hosted, Windows
2Knockout API6.4Free plan$0.02/moAPI, Web
3Microcks6.4Free planFreeAPI, Browser, Linux, Mac, self-hosted, Web, Windows
4Mockfly6.4Free plan€15/moAPI, Browser, Linux, self-hosted, Web
5Mockzilla6.4Free plan$10/moAPI, Linux, Mac, self-hosted, Web, Windows
6MockAPI6.3Free plan$2.92/moAPI, Web
7Mockttp6.3Free planFreeLinux, Mac, self-hosted, Web, Windows
8moqapi.dev6.3Free plan$29/moAPI, Web
9WireMock6.3Free planFreeAPI, Linux, self-hosted, Web
10json-server6.2Free planFreeAPI, self-hosted
11MockServer6.2Free planFreeAPI, Linux, Mac, self-hosted, Web, Windows
12MockWebServer6.2Free planFree—
13Stoplight Elements6.2Free planFreeself-hosted, Web
14WireMock6.2Free planFreeAPI, Linux, Mac, self-hosted, Web, Windows
15Imposter5.8No—Linux, Mac, self-hosted, Windows
17OpenAPI Mock5.8No—Linux, self-hosted, Windows
18OpenAPI Server5.8No—API, self-hosted
19Mocki5.7No$15/moAPI, self-hosted, Web
20Mockoon5.7No€10/moAPI, Linux, Mac, self-hosted, Web, Windows
21API-Mocked5.6No—self-hosted
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Questions about Mock Service Worker alternatives

What is the best alternative to Mock Service Worker?

Parasoft SOAtest, number 1 in API mocking tools with a score of 7.3 out of 10. The others here: Knockout API, Microcks, Mockfly and 16 more.

What is the best free alternative to Mock Service Worker?

Knockout API is the best-ranked alternative with a free plan. 13 of the 20 alternatives here publish a free plan on their own pricing pages.

How are these alternatives ranked?

Ranked mobile-first: a phone app alongside the web or desktop product, a free tier and the depth of its documentation.