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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Collaborative platform for API development providing design, specifications, testing, documentation, and requests with free and paid subscription plans.

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Postman alternatives page was last updated Feb 13, 2025
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  1. Humlix icon
    Humlix icon

    Humlix

     1 like
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    Humlix shows you an easy way of generating tests for your web APIs. All you need to do is create a test request using the test request builder within Humlix and give an example of how your endpoints look and what type of data they want.

    26 Humlix alternatives
    Humlix screenshot 1

    License model

    • Free • Proprietary

    Application type

    Platforms

    • Mac
    • Windows
    • Linux

    Humlix Features

    1.  API Testing
    Humlix iconPostman Icon

    Humlix VS Postman

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  2. Restfox icon
    Restfox icon

    Restfox

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    Offline-first web HTTP client.

    60 Restfox alternatives
    Restfox screenshot 1

    License model

    • Free • Open Source

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • Docker
    Restfox screenshot 1
    Restfox screenshot 2
    +5
    Restfox screenshot 3

    Restfox Features

    1.  Dark Mode
    2.  Portable
    3.  REST API
    4.  API Testing
    5. GraphQL icon  GraphQL integration
    6.  REST Client
    Restfox iconPostman Icon

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  4. 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.

    34 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

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  5. Curlie

     2 likes
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    If you like the interface of HTTPie but miss the features of curl, curlie is what you are searching for. Curlie is a frontend to curl that adds the ease of use of httpie, without compromising on features and performance.

    24 Curlie alternatives
    Curlie screenshot 1

    License model

    • Free • Open Source

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • BSD

    Curlie Features

    1.  Command line interface
    2.  REST API
    3.  REST Client
    4.  Web Testing
    5.  Data transfer
    Postman Icon

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  6. APITree icon
    APITree icon

    APITree

     1 like
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    APITree is a free cloud-based API tool to create, manage and share OpenAPI specifications. It converts your OpenApi v2 / v3 specification into a beautiful technical API documentation. Public API documentation is hosted for free.

    14 APITree alternatives

    License model

    • Freemium • Proprietary

    Platforms

    • Software as a Service (SaaS)

    APITree Features

    1.  CI Integration
    2.  OpenAPI integration
    3.  API Management
    4.  REST API
    APITree iconPostman Icon

    APITree VS Postman

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  7. EchoAPI icon
    EchoAPI icon

    EchoAPI

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    EchoAPI is an all-in-one API development collaboration platform that offers essential features like API debugging, design, automated testing, stress testing, and documentation generation.

    51 EchoAPI alternatives

    License model

    • Freemium • Proprietary

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • Google Chrome
    • Visual Studio Code
    • IntelliJ IDEA

    EchoAPI Features

    1.  Extensible by Plugins/Extensions
    EchoAPI iconPostman Icon

    EchoAPI VS Postman

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  9. Hello HTTP icon
    Hello HTTP icon

    Hello HTTP

     1 like
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    A cross-platform HTTP client desktop application for testing HTTP and REST APIs, WebSocket, GraphQL (including subscriptions) and gRPC endpoints.

    13 Hello HTTP alternatives
    Hello HTTP screenshot 1

    License model

    • Free • Open Source

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    Hello HTTP screenshot 1
    Hello HTTP screenshot 2

    Properties

    1.  Lightweight

    Features

    1.  Portable
    2.  Java based
    3.  GraphQL API
    4.  REST API
    5.  Websocket testing
    Hello HTTP iconPostman Icon

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