Best OpenAPI Server Alternatives in 2026
Updated
20 apps from API mocking tools ranked against OpenAPI Server on the same published basis.
- 1OpenAPI Server vs WireMock
- 2OpenAPI Server vs MockServer
- 3OpenAPI Server vs Microcks
- 4OpenAPI Server vs WireMock
- 5OpenAPI Server vs Mockzilla
- 6OpenAPI Server vs Mockfly
- 7OpenAPI Server vs Mockoon
- 8OpenAPI Server vs Mock Service Worker
- 9OpenAPI Server vs moqapi.dev
- 10OpenAPI Server vs Beeceptor
- 11OpenAPI Server vs MockAPI
- 12OpenAPI Server vs Imposter
- 13OpenAPI Server vs Hoverfly
- 14OpenAPI Server vs json-server
- 15OpenAPI Server vs OpenAPI Mock
- 17OpenAPI Server vs Knockout API
- 18OpenAPI Server vs Stoplight Prism
- 19OpenAPI Server vs Mocki
- 20OpenAPI Server vs Mockttp
- 21OpenAPI Server vs Mirage JS
OpenAPI Server alternatives compared
| # | App | Score | Free plan | From | Runs on |
|---|---|---|---|---|---|
| 1 | WireMock | 8.0 | Free plan | Free | API, Linux, self-hosted, Web |
| 2 | MockServer | 7.9 | Free plan | Free | API, Linux, Mac, self-hosted, Web, Windows |
| 3 | Microcks | 7.9 | Free plan | Free | API, Browser, Linux, Mac, self-hosted, Web, Windows |
| 4 | WireMock | 7.8 | Free plan | Free | API, Linux, Mac, self-hosted, Web, Windows |
| 5 | Mockzilla | 7.3 | Free plan | $10/mo | API, Linux, Mac, self-hosted, Web, Windows |
| 6 | Mockfly | 7.2 | Free plan | €15/mo | API, Browser, Linux, self-hosted, Web |
| 7 | Mockoon | 7.1 | No | €10/mo | API, Linux, Mac, self-hosted, Web, Windows |
| 8 | Mock Service Worker | 7.1 | No | — | self-hosted, Web |
| 9 | moqapi.dev | 7.1 | Free plan | $29/mo | API, Web |
| 10 | Beeceptor | 7.0 | No | — | Web |
| 11 | MockAPI | 7.0 | Free plan | $2.92/mo | API, Web |
| 12 | Imposter | 6.8 | No | — | Linux, Mac, self-hosted, Windows |
| 13 | Hoverfly | 6.7 | No | $10/mo | API, Linux, Mac, self-hosted, Web, Windows |
| 14 | json-server | 6.4 | Free plan | Free | API, self-hosted |
| 15 | OpenAPI Mock | 6.2 | No | — | Linux, self-hosted, Windows |
| 17 | Knockout API | 6.1 | Free plan | $0.02/mo | API, Web |
| 18 | Stoplight Prism | 6.0 | No | — | Web |
| 19 | Mocki | 5.8 | No | $15/mo | API, self-hosted, Web |
| 20 | Mockttp | 5.7 | Free plan | Free | Linux, Mac, self-hosted, Web, Windows |
| 21 | Mirage JS | 5.5 | No | — | Web |
Make your app an alternative to OpenAPI Server
See the priceThe sponsored alternative slot on this page is labelled and never changes the order above.
Questions about OpenAPI Server alternatives
What is the best alternative to OpenAPI Server?
WireMock, number 1 in API mocking tools with a score of 8.0 out of 10. The others here: MockServer, Microcks, WireMock and 16 more.
What is the best free alternative to OpenAPI Server?
WireMock is the best-ranked alternative with a free plan. 11 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. Paid placements never change a rank.