APIFae compared to WireMock, Prism and Mockoon
Every row below was read from the tool’s own documentation in September 2026, and the sentence it rests on is quoted underneath. Where a tool does something APIFae does, the row says so.
| Capability | APIFae | WireMock (opens in a new tab) | Prism (opens in a new tab) | Mockoon (opens in a new tab) |
|---|---|---|---|---|
| What you install first | Nothing. One native binary. | A JVM | Node, a container runtime or a standalone binary | Node, a container runtime or the desktop app |
| Mocks are files you can commit | YAML | JSON mappings | The spec or Postman collection itself | JSON |
| Record a real API into mocks | Yes | Yes | No. The spec is the source | Yes |
| Named states a scenario moves between | Yes | Yes | No. Examples are picked by name | No. Responses are rule-based, random or sequential |
| Compares your mock against the live API | Yes, apifae diff | Not in open-source WireMock | No. It checks the implementation against a spec | No. Proxy mode forwards, it does not compare |
| Works without an OpenAPI spec | Yes. A spec adds a second check | Yes. Cloud’s validation needs a spec | No. It needs a spec or a Postman collection | Yes |
Head to head
What each row is based on
Version numbers move and documentation gets rewritten. If a quote below no longer matches the page it links to, the row is out of date and worth telling us about.
What you install first
- WireMock
A JVM
you can run it simply by doing this … java -jar wiremock-standalone
https://wiremock.org/docs/standalone/java-jar/ (opens in a new tab)- Prism
Node, a container runtime or a standalone binary
npm install -g @stoplight/prism-cli … standalone binaries are provided for all major platforms … Prism is available as a Docker image
https://github.com/stoplightio/prism/blob/main/docs/getting-started/01-installation.md (opens in a new tab)- Mockoon
Node, a container runtime or the desktop app
a simple and easy to use NPM package or Docker image
https://mockoon.com/cli/ (opens in a new tab)
Mocks are files you can commit
- WireMock
JSON mappings
will be saved to the file system (or other back-end if you've implemented your own MappingsSource) and will survive calls to reset mappings
https://wiremock.org/docs/record-playback/ (opens in a new tab)- Prism
The spec or Postman collection itself
Turn any OpenAPI2/3 and Postman Collection file into an API server with mocking, transformations and validations
https://github.com/stoplightio/prism (opens in a new tab)- Mockoon
JSON
They are stored in a JSON format and can be easily shared with other Mockoon users, used with the CLI, or stored in a git repository
https://mockoon.com/docs/latest/mockoon-data-files/data-files-location/ (opens in a new tab)
Record a real API into mocks
- WireMock
Yes
WireMock can create stub mappings from requests it has received. Combined with its proxying feature this allows you to "record" stub mappings from interaction with existing APIs
https://wiremock.org/docs/record-playback/ (opens in a new tab)- Prism
No. The spec is the source
Prism can be given an OpenAPI v2 or v3 description document, which is essentially a data source for all the decisions Prism makes
https://github.com/stoplightio/prism/blob/main/docs/getting-started/02-concepts.md (opens in a new tab)- Mockoon
Yes
Mockoon can also automatically create mock API endpoints every time a request is logged
https://mockoon.com/docs/latest/logging-and-recording/auto-mocking-and-recording/ (opens in a new tab)
Named states a scenario moves between
- WireMock
Yes
Stub mappings can be configured to match on scenario state, such that stub A can be returned initially, then stub B once the next scenario state has been triggered
https://wiremock.org/docs/stateful-behaviour/ (opens in a new tab)- Prism
No. Examples are picked by name
If there are multiple examples, then they can be selected by name
https://github.com/stoplightio/prism/blob/main/docs/guides/01-mocking.md (opens in a new tab)- Mockoon
No. Responses are rule-based, random or sequential
Route responses order define the order in which the rules are interpreted … Mockoon can serve the route responses randomly (200, 500, 404) to simulate an unpredictable behavior … Mockoon can serve the route responses sequentially (200 → 500 → 404)
https://mockoon.com/docs/latest/route-responses/multiple-responses/ (opens in a new tab)
Compares your mock against the live API
- WireMock
Not in open-source WireMock
API drift detection Not available
https://wiremock.org/docs/wiremock-cloud/ (opens in a new tab)- Prism
No. It checks the implementation against a spec
Prism can help you check for discrepencies between your API implementation and the OpenAPI document that describes
https://github.com/stoplightio/prism (opens in a new tab)- Mockoon
No. Proxy mode forwards, it does not compare
any other request not matching any route path will be forwarded to the server URL you entered in the proxy mode setting
https://mockoon.com/docs/latest/server-configuration/proxy-mode/ (opens in a new tab)
Works without an OpenAPI spec
- WireMock
Yes. Cloud’s validation needs a spec
requests made to your mock API and responses returned by your mock API are compliant with your OpenAPI specification
https://docs.wiremock.io/openAPI/openapi-validation (opens in a new tab)- Prism
No. It needs a spec or a Postman collection
Turn any OpenAPI2/3 and Postman Collection file into an API server with mocking, transformations and validations
https://github.com/stoplightio/prism (opens in a new tab)- Mockoon
Yes
Mockoon desktop stores each mock API's data in a separate file. These files contain all the information about the environment, routes, and responses
https://mockoon.com/docs/latest/mockoon-data-files/data-files-location/ (opens in a new tab)
Our own column
The APIFae cells carry no quotes because you can run them. Every command and flag in the manual is checked against the binary on every change, and Keep a mock honest walks through a real apifae diff against a live API you start yourself.