Postman AlternativesOnly Free apps categorised as API Clients - Page 3

The best free API Client 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 are free API Clients so hopefully you can find a suitable replacement. Other interesting free API Client 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.
Postman iconPostman
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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
Postman alternatives page was last updated Dec 6, 2023
  1. Hurl icon
     7 likes

    Hurl is a command line tool that runs HTTP requests defined in a simple plain text format. It can capture values, evaluate queries on headers and body response. It is very versatile: it can be used for both fetching data and testing HTTP sessions.

    34 Hurl alternatives
    Html report

    License model

    • FreeOpen Source

    Application types

    Platforms

    • Mac
    • Windows
    • Linux

    Properties

    1.  Lightweight

    Features

    1.  Command line interface
    2.  Portable
    3.  Cross-Platform
    4.  REST API
    5.  API Integration
    Hurl iconPostman Icon

    Hurl VS Postman

    Is Hurl a good alternative to Postman?
     
  2. ArdorQuery icon
     Like this app

    ArdorQuery is a cross-platform tool for performing any HTTP(S) endpoints like REST API, HTML, Images, GraphQL, OData etc.

    52 ArdorQuery alternatives
    ArdorQuery screenshot 1

    License model

    • FreeOpen Source

    Application types

    Platforms

    • Mac
    • Linux
    • Flathub

    ArdorQuery Features

    1.  REST API
    2.  QA Automation
    ArdorQuery iconPostman Icon

    ArdorQuery VS Postman

    Is ArdorQuery a good alternative to Postman?
     
  3. RESTer icon
     6 likes

    A REST client for almost any web service (Firefox and Chrome extension).

    49 RESTer alternatives
    RESTer screenshot 1

    License model

    • FreeOpen Source

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • Google Chrome
    • Firefox

    RESTer Features

    1.  Command line interface
    2.  Project Organization
    3.  API Management
    4.  Variables
    RESTer iconPostman Icon

    RESTer VS Postman

    Is RESTer a good alternative to Postman?
     
    Comments about RESTer as an Alternative to Postman
     
    Guest

    Amazing interface, integrates very well in Firefox, prettyfies the code… What else?

    Positive commentSep 13, 2018
    1
    Postman Icon
    RESTer icon
    • Almost everyone thinks RESTer is a great Postman alternative.

    • RESTer is Free and Open SourcePostman is Freemium and Proprietary
  4. WizTools RESTClient icon
     6 likes

    RESTClient can be used to test variety of HTTP communications and RESTful webservices. Friendly GUI, rich functionalities.

    58 WizTools RESTClient alternatives
    WizTools RESTClient screenshot 1

    License model

    • FreeOpen Source

    Application types

    Platforms

    • Mac
    • Windows
    • Linux

    WizTools RESTClient Features

    1.  REST Client
    Discontinued

    The project seems no longer developed. Last version, 3.7.1, released in December 2018, can be still downloaded from GitHub

    WizTools RESTClient iconPostman Icon

    WizTools RESTClient VS Postman

    Is WizTools RESTClient a good alternative to Postman?
     
  5. Thunder Client icon
     4 likes

    Thunder Client is a hand-crafted lightweight Http Client extension for Visual Studio Code. No separate download needed, Just install the extension from VS Code marketplace.

    58 Thunder Client alternatives
    Thunder Client Main Interface

    License model

    • FreeProprietary

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • Visual Studio Code

    Properties

    1.  Lightweight

    Features

    1.  API Testing
    2.  REST Client
    3.  REST API
    4.  HTTP Testing
    Thunder Client iconPostman Icon

    Thunder Client VS Postman

    Is Thunder Client a good alternative to Postman?
     
    Comments about Thunder Client as an Alternative to Postman
     
    Ola Johansson

    Nice extension to VS Code that can replace Postman or Insomnia.

    Positive commentJun 8, 2021
    0
    scottfrost

    Pulled a bait and switch and now charges for basic features like the ability to sync via GIT

    Negative commentJun 7, 2023
    0
    Postman Icon
    Thunder Client icon
    • Thunder Client is Free and ProprietaryPostman is Freemium and Proprietary
    • Thunder Client is LightweightPostman is not according to our users
  6. Stoplight icon
     12 likes

    Stoplight is an API Design, Development, and Documentation platform that enables consistency, reusability, and quality, all with an easy, enjoyable developer experience.

    41 Stoplight alternatives
    Stoplight screenshot 1

    License model

    • FreemiumOpen Source

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • Online

    Stoplight Features

    1.  API Management
    Stoplight iconPostman Icon

    Stoplight VS Postman

    Is Stoplight a good alternative to Postman?
     
    Comments about Stoplight as an Alternative to Postman
     
    Guest

    simple ui get the response..!!!!

    Positive commentApr 1, 2017
    0
    Postman Icon
    Stoplight icon
    • Stoplight is Freemium and Open SourcePostman is Freemium and Proprietary
  7. Hello HTTP icon
     1 like

    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

    • FreeOpen Source

    Application type

    Platforms

    • Mac
    • Windows
    • Linux

    Properties

    1.  Lightweight

    Features

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

    Hello HTTP VS Postman

    Is Hello HTTP a good alternative to Postman?
     
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