Free Postman Alternatives

The best free alternative to Postman is Insomnia REST Client, which is also Open Source. If that doesn't suit you, our users have ranked more than 50 alternatives to Postman and loads of them is free so hopefully you can find a suitable replacement. Other interesting free alternatives to Postman are HTTPie for Terminal, Hoppscotch, RapidAPI for Mac and soapUI.

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Postman alternatives are mainly API Clients but may also be HTTP Clients or HTTP(S) Debuggers.  Filter by these or use the filter bar below if you want a narrower list of alternatives or looking for a specific functionality of Postman.
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Postman is a tool that facilitates the development and use of APIs. Postman provides all the functionality needed to create or simulate API specifications and use the Postman Collection Runner to create tests.

More about Postman
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Postman alternatives page was last updated Oct 30, 2023
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  1. Yaade icon
    Yaade icon

    Yaade

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    Yaade is the only open-source, fully self-hosted, collaborative API development environment.

    13 Yaade alternatives
    Yaade screenshot 1

    License model

    • Free • Open Source

    Application types

    Platforms

    • Online
    • Self-Hosted

    Properties

    1.  Lightweight

    Features

    1.  Portable
    2. Docker icon  Support for Docker
    Yaade iconPostman Icon

    Yaade VS Postman

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    Comments about Yaade as an Alternative to Postman
     
    Guest

    This is currently the only true open source and self hosted API client available.

    Positive comment •Feb 2, 2023
    0
    Postman Icon
    Yaade icon
    • Yaade is Free and Open SourcePostman is Freemium and Proprietary
    • Yaade is LightweightPostman is not according to our users
  2. Milkman icon
    Milkman icon

    Milkman

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    Milkman is a JavaFx-based workbench for crafting requests / responses. It is not limited to e.g. http (or more specifically rest) requests but can be extended in any imaginable way. It is optimized for fast startup and efficient workflow.

    26 Milkman alternatives
    Milkman screenshot 1

    License model

    • Free • Open Source

    Application type

    Platforms

    • Mac
    • Windows
    • Linux

    Milkman Features

    1.  API Integration
    2.  API Testing
    3.  REST API
    Milkman screenshot 1
    Milkman iconPostman Icon

    Milkman VS Postman

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  4. TestMace icon
    TestMace icon

    TestMace

     5 likes
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    Powerful IDE to work with API. Harness the power of scenarios, autocompletion and syntax highlight for API development. Write tests, share code without leaving the comfortable development environment.

    46 TestMace alternatives
    TestMace screenshot 1

    License model

    • Freemium • Proprietary

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    TestMace screenshot 1
    TestMace screenshot 2
    +1
    TestMace screenshot 3

    TestMace Features

    1.  Syntax Highlighting
    2.  Advanced variables mechanism
    3.  Variables
    4.  REST API
    5.  Support environment variables
    6.  Graphical User Interface
    7.  Import Curl commands
    8.  Electron based
    9.  API Testing
    TestMace iconPostman Icon

    TestMace VS Postman

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  5. RestCase icon
    RestCase icon

    RestCase

     1 like
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    RestCase is a security-focused API development platform that enables its users to rapidly create secure microservices, mock them in order to start testing, monitor APIs and collaborate on their development and testing.

    33 RestCase alternatives
    RestCase screenshot 1

    License model

    • Freemium • Proprietary

    Application type

    Platforms

    • Online

    RestCase Features

    1.  API Testing
    2.  REST API
    RestCase screenshot 1
    RestCase iconPostman Icon

    RestCase VS Postman

    Is RestCase a good alternative to Postman?
     
  6. Apidog icon
    Apidog icon

    Apidog

     3 likes
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    Design and debug APIs in a powerful visual editor. Describe and debug easily with JSON Schema support. Apidog is a complete set of tools that connects the entire API lifecycle, helping R&D teams implement best practices for API Design-first development.

    41 Apidog alternatives
    Apidog screenshot 1

    License model

    • Freemium • Proprietary

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    Test APIs visually
    Publish beautiful documentation
    +1
    Smart mock without scripts
    Apidog iconPostman Icon

    Apidog VS Postman

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  7. Conektto icon
    Conektto icon

    Conektto

     1 like
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    Conektto's API lifecycle fabric is the world's first SAAS based visual designer for API that generates spec, mocks, visualization, code, test and test data automatically.

    24 Conektto alternatives
    Conektto screenshot 1

    License model

    • Freemium • Proprietary

    Application type

    Platforms

    • Software as a Service (SaaS)

    Conektto Features

    1.  API Testing
    2.  REST API
    Conektto screenshot 1
    Conektto screenshot 2
    +5
    Conektto screenshot 3
    Conektto iconPostman Icon

    Conektto VS Postman

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    Comments about Conektto as an Alternative to Postman
     
    coolmechslim

    This is postman on UX steroids

    Positive comment •Jun 7, 2022
    0
    Postman Icon
    Conektto icon
    • Conektto is Freemium and ProprietaryPostman is also Freemium and Proprietary
  9. Step CI icon
    Step CI icon

    Step CI

     1 like
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    Open-source API Test Automation framework.

    47 Step CI alternatives
    Step CI screenshot 1

    License model

    • Free • Open Source

    Platforms

    • Self-Hosted

    Step CI Features

    1.  REST API
    2.  Support environment variables
    3.  GraphQL
    4.  SOAP API
    5.  Variables
    6.  Request Chaining
    7.  API Testing
    Step CI iconPostman Icon

    Step CI VS Postman

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