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Buyer's guide

Best API Mocking software

Compare API Mocking products. Open any profile for real pricing, compliance, and buyer-fit detail, or jump into the api mocking directory to filter by industry, company size, and certifications.

6 toolsUpdated 2026
Browse the full api mocking directory for every tool in this category, with filters for industry, company size, and certifications.
  1. 1
    Postman logo
    Postman is an API platform for designing, testing, documenting, and monitoring APIs with collaboration features for developer teams.
    API Testing Platforms
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  2. 2
    Speedscale logo
    Speedscale: Traffic replay platform for Kubernetes that captures production traffic and replays it for performance and functional testing.
    Performance Testing Tools
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  3. 3
    Insomnia Cloud logo
    Insomnia Cloud: Cloud collaboration product within Insomnia that syncs API collections, environments, and mocks across teams with E2E encryption.
    API Developer Tools
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  4. 4
    MSW logo
    MSW: API mocking library for JavaScript that intercepts network requests using Service Workers for browser and Node.js testing.
    API Mocking
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  5. 5
    Hoverfly logo
    Hoverfly: Lightweight API simulation tool for creating HTTP service virtualizations to enable fast parallel development and testing.
    API Mocking
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  6. 6
    WireMock logo
    WireMock: Flexible API mocking tool for testing microservices and APIs by simulating HTTP-based APIs for reliable integration testing.
    API Mocking
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  7. 7
    Requestly logo
    Requestly: Browser extension and desktop app for intercepting, modifying, and mocking HTTP requests for debugging and testing.
    API Testing Platforms
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  8. 8
    HTTP Toolkit logo
    HTTP Toolkit: Open source tool for debugging, testing, and building with HTTP and HTTPS traffic interception.
    API Testing Tools
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  9. 9
    Karate Labs logo
    Karate Labs: Open source API testing framework combining test automation with API mocks and performance.
    Test Automation Frameworks
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  10. 10
    Mockoon logo
    Mockoon: Desktop application for creating mock REST APIs with templating, response rules, and proxy mode for local development.
    API Mocking
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  11. 11
    Mockbin logo
    Mockbin: Simple mock HTTP server by Kong for testing and debugging HTTP calls from your apps.
    API Mocking
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  12. 12
    Microcks logo
    Microcks: Open source Kubernetes-native tool for mocking and testing APIs and microservices from OpenAPI and AsyncAPI specs.
    API Mocking
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  13. 13
    MockServer logo
    MockServer: Open source tool for mocking any system integrated via HTTP or HTTPS with a Java-based mock and proxy server.
    API Mocking
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  14. 14
    Mockaroo logo
    Mockaroo: Realistic test data generation platform creating data in multiple formats with REST API mocks.
    API Mocking
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  15. 15
    Hoppscotch Cloud logo
    Hoppscotch Cloud: Cloud team workspace product within Hoppscotch with SSO, collaborative collections, and enterprise controls.
    Cloud Development Environments
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  16. 16
    Beeceptor logo
    Beeceptor: Mock HTTP server and request inspector providing instant endpoints for testing and prototyping APIs.
    API Testing Tools
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  17. 17
    SoapUI logo
    SoapUI: Open source API testing tool by SmartBear supporting REST, SOAP, and GraphQL with assertion-based validation.
    API Testing Tools
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  18. 18
    Prism logo
    Prism: Open source HTTP mock and validation server that generates realistic responses from OpenAPI specifications.
    API Mocking
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  19. 19
    Wiretap logo
    Wiretap: Open-source OpenAPI-aware HTTP proxy for validating API requests and responses against schemas in real time.
    API Testing Tools
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  20. 20
    httpbin logo
    httpbin: HTTP Request & Response Service written in Python for testing HTTP clients and APIs.
    API Testing Tools
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  21. 21
    Ladle logo
    Ladle: Vite-based alternative to Storybook for building and testing React components with faster startup.
    Component Testing
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  22. 22
    Rystic logo
    Rystic: API simulators for testing and training agents locally
    API Mocking
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Frequently asked

What is the best api mocking software?

The guide above features api mocking tools with complete, vendor-maintained profiles. Open any profile for real pricing, compliance, and buyer-fit detail before you shortlist.

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Ranked from Cubbie's live catalog, https://www.cubbie.com/best/api-mocking