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Best Mock Service Worker Alternatives in 2026

Updated

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

  1. 1
    Knockout API Free plan apiWeb $0.02/mo7.4
    Mock Service Worker vs Knockout API
  2. 2
    Microcks Free plan apiextensionLinuxMacself-hosted Free7.4
    Mock Service Worker vs Microcks
  3. 3
    Mockfly Free plan apiextensionLinuxself-hostedWeb €15/mo7.4
    Mock Service Worker vs Mockfly
  4. 4
    Mockzilla Free plan apiLinuxMacself-hostedWeb $10/mo7.4
    Mock Service Worker vs Mockzilla
  5. 5
    MockAPI Free plan apiWeb $2.92/mo7.3
    Mock Service Worker vs MockAPI
  6. 6
    moqapi.dev Free plan apiWeb $29/mo7.3
    Mock Service Worker vs moqapi.dev
  7. 7
    json-server Free plan apiself-hosted Free7.2
    Mock Service Worker vs json-server
  8. 8
    MockServer Free plan apiLinuxMacself-hostedWeb Free7.2
    Mock Service Worker vs MockServer
  9. 9
    WireMock Free plan apiLinuxself-hostedWeb Free7.2
    Mock Service Worker vs WireMock
  10. 10
    WireMock Free plan apiLinuxMacself-hostedWeb Free7.2
    Mock Service Worker vs WireMock
  11. 11
    OpenAPI Server apiself-hosted 7.0
    Mock Service Worker vs OpenAPI Server
  12. 12
    Mocki Free trial apiself-hostedWeb $15/mo6.9
    Mock Service Worker vs Mocki
  13. 13
    Mockoon Free trial apiLinuxMacself-hostedWeb €10/mo6.9
    Mock Service Worker vs Mockoon
  14. 14
    Parasoft SOAtest Free trial AndroidapiiOSLinuxMac 6.9
    Mock Service Worker vs Parasoft SOAtest
  15. 15
    Hoverfly Free trial apiLinuxMacself-hostedWeb $10/mo6.7
    Mock Service Worker vs Hoverfly
  16. 16
    Mockttp Free plan LinuxMacself-hostedWebWin Free5.9
    Mock Service Worker vs Mockttp
  17. 17
    MockWebServer Free plan Free5.8
    Mock Service Worker vs MockWebServer
  18. 18
    Stoplight Elements Free plan self-hostedWeb Free5.8
    Mock Service Worker vs Stoplight Elements
  19. 19
    Imposter LinuxMacself-hostedWin 5.6
    Mock Service Worker vs Imposter
  20. 21
    OpenAPI Mock Linuxself-hostedWin 5.6
    Mock Service Worker vs OpenAPI Mock

Mock Service Worker alternatives compared

#PlatformScoreFree planFromRuns on
1Knockout API7.4Free plan$0.02/moAPI, Web
2Microcks7.4Free planFreeAPI, Browser, Linux, Mac, self-hosted, Web, Windows
3Mockfly7.4Free plan€15/moAPI, Browser, Linux, self-hosted, Web
4Mockzilla7.4Free plan$10/moAPI, Linux, Mac, self-hosted, Web, Windows
5MockAPI7.3Free plan$2.92/moAPI, Web
6moqapi.dev7.3Free plan$29/moAPI, Web
7json-server7.2Free planFreeAPI, self-hosted
8MockServer7.2Free planFreeAPI, Linux, Mac, self-hosted, Web, Windows
9WireMock7.2Free planFreeAPI, Linux, self-hosted, Web
10WireMock7.2Free planFreeAPI, Linux, Mac, self-hosted, Web, Windows
11OpenAPI Server7.0No—API, self-hosted
12Mocki6.9No$15/moAPI, self-hosted, Web
13Mockoon6.9No€10/moAPI, Linux, Mac, self-hosted, Web, Windows
14Parasoft SOAtest6.9No—Android, API, iOS, Linux, Mac, self-hosted, Windows
15Hoverfly6.7No$10/moAPI, Linux, Mac, self-hosted, Web, Windows
16Mockttp5.9Free planFreeLinux, Mac, self-hosted, Web, Windows
17MockWebServer5.8Free planFree—
18Stoplight Elements5.8Free planFreeself-hosted, Web
19Imposter5.6No—Linux, Mac, self-hosted, Windows
21OpenAPI Mock5.6No—Linux, self-hosted, Windows
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Questions about Mock Service Worker alternatives

What is the best alternative to Mock Service Worker?

Knockout API, number 1 in API mocking tools with a score of 7.4 out of 10. The others here: Microcks, Mockfly, Mockzilla 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 on what each maker publishes, open and connectable first: a public API, open-source code, the depth of its documentation and a free tier to try it on. Model lists are sorted by the figure in their title, exactly as each provider publishes it.