MockServer vs mountebank

MockServer vs mountebank
Fact	MockServer	mountebank
Language	Java	JavaScript
Licence	Apache-2.0	MIT
Stars	5k	2.1k
Latest	mockserver-9.0.0	v2.9.4
Last push	2026-10-19	2026-10-16
Release cadence	about 27 days between releases	about 172 days between releases
Active contributors	2+ commit authors on the default branch in the last 90 days	3 commit authors on the default branch in the last 90 days
Flags	none	none

How they relate

Both replace Postman. Alternatives to Postman →
PartialMockServerMock APIs and proxy and record traffic for tests, without collections or a request editor.
PartialmountebankMock servers for testing, without collections or a request editor.
Both replace WireMock. Alternatives to WireMock →
Full replacementMockServerHTTP mocking, request matching and fault injection from code or configuration.
Full replacementmountebankProgrammable test doubles for HTTP, TCP and SMTP, driven by a REST API.

v2.9.42026-04-15This is the third release published under the new mountebank-testing organization. This is a community effort to contin…
v2.9.32026-03-05This is the second release published under the new mountebank-testing organization. This is a community effort to conti…
v2.9.22025-09-14This is the first release published under the new mountebank-testing organization. This is a community effort to contin…
v1.0.2862014-02-03

unsigned The latest release, mockserver-9.0.0, carries no signature GitHub could verify.

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unsigned The latest release, v2.9.4, carries no signature GitHub could verify.

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