Mockoon
A desktop app and CLI for designing and running mock REST APIs locally without an account.
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2 more ways to get Mockoon
Package managers
- Chocolatey
choco install mockoon - Homebrew
brew install --cask mockoon
About Mockoon
Mockoon lets you build a fake REST API in a desktop interface and run it on your own machine, or run the same mocks anywhere with its command-line tool. It imports OpenAPI specifications and supports dynamic templating, rules matching, JSON databases, proxy mode, webhooks and TLS.
It can also record incoming HTTP requests, which helps when testing integrations or webhooks. The app is free and open source; Mockoon Cloud adds paid hosted deployments. It suits developers who need a working API before the real one exists.
Strengths
- No account or remote deployment needed
- Imports OpenAPI specifications
- Records and proxies HTTP requests
- CLI runs the same mocks in CI or on servers
Limitations
- Focused on REST APIs
- Hosted deployments require the paid cloud service
Details
- Pricing
- FreemiumThe desktop app and CLI are free and open source; Mockoon Cloud is a paid add-on.
- License
- Open source, license not stated
- Developer
- Mockoon
- Platforms
- Windows, macOS, Linux, Command line
- How it runs
- Downloadable app
- Account
- Not required
- Works offline
- Yes
- Best suited for
- Developers who need a local mock API for testing and integration work
- Categories
- API clients, Developer tools, Notifications & webhooks
- Last verified
- Added
- Provenance
- Facts checked against the developer's own pages and store listings, 1 sources on file.
Alternatives to Mockoon
Compare allSoftware that can replace Mockoon for an important use case, and what changes if you switch.
Beeceptor
A web service for creating mock API servers and inspecting incoming webhook requests in real time.
Beeceptor hosts mock servers on a unique subdomain with dynamic responses and imports several definition formats, but requests pass through a third party.
Mockbin
A free web tool that creates mock API endpoints with fixed responses and logs requests to them.
Mockbin creates hosted mock endpoints with fixed responses from OpenAPI documents without an account, but lacks programmable logic and local running.
Stoplight
A web platform for designing OpenAPI descriptions, generating API documentation and running mock servers.
Stoplight generates mock servers from OpenAPI descriptions alongside design and docs hosting, but it is a hosted service requiring an account.
Apidog
An API platform for designing, debugging, mocking and testing APIs, with desktop and web clients.
Apidog includes mocking within a closed-source platform for API design, debugging and testing, heavier than a dedicated mock tool.
Postman
The most widely used API client, for sending HTTP requests, organising them into collections and sharing them with a team.
Postman generates mock servers from its collections as part of a closed-source client built around a cloud workspace.
Similar software
Related functionality, not necessarily a direct replacement.
Insomnia
An API client for REST, GraphQL and gRPC that can keep everything local or sync through Git instead of a cloud.
SoapUI Open Source
An open-source desktop tool for functional testing of SOAP and REST APIs.
WebHook Tester
A self-hosted tool for testing and debugging webhooks and HTTP requests on randomly generated URLs.
Proxyman
Desktop HTTP and HTTPS debugging proxy for capturing, inspecting and mocking network requests.
HTTP Toolkit
An open-source desktop tool for intercepting, inspecting and rewriting HTTP and HTTPS traffic.
Swagger UI
Renders an OpenAPI description as interactive, testable documentation.
