Postman AlternativesOnly Free apps categorised as API Clients - Page 5

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.
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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.

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Postman alternatives page was last updated Feb 15, 2023
  1.  2 likes

    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

    • FreeOpen 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

    Curlie VS Postman

    Is Curlie a good alternative to Postman?
     
  2. httpYac Rest Client icon
     1 like

    Used httpyac CLI tool underneath, which helps you execute _.http and _.rest files. This can be used to quickly execute a single *.http file, but also to execute all files in a folder. httpyac supports HTTP, Rest, GraphQL, WebSocket und gRPC...

    46 httpYac Rest Client alternatives
    httpYac Rest Client screenshot 1

    License model

    • FreeOpen Source

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • Chrome OS

    Properties

    1.  Lightweight

    Features

    1.  Ad-free
    2.  Command line interface
    3.  REST Client
    httpYac Rest Client iconPostman Icon

    httpYac Rest Client VS Postman

    Is httpYac Rest Client a good alternative to Postman?
     
  3. Requester icon
     4 likes

    HTTP client plugin for Sublime Text with an expansive feature set, modern UX, elegant syntax and first class support for testing.

    41 Requester alternatives
    Requester screenshot 1

    License model

    • FreeOpen Source

    Application types

    Platforms

    • Mac
    • Windows
    • Linux

    Requester Features

    1.  Debugging
    2.  REST API
    Requester iconPostman Icon

    Requester VS Postman

    Is Requester a good alternative to Postman?
     
  4. API Test Base icon
     1 like

    API test automation tool that has GUI, supports HTTP stubs (mock services), data driven testing, and API types beyond HTTP, such as relational database, JMS, FTP(s), AMQP, MQTT, etc.

    36 API Test Base alternatives
    Vanilla Test Cases

    License model

    • FreeProprietary

    Application types

    Platforms

    • Mac
    • Windows
    • Docker

    Properties

    1.  Lightweight

    Features

    1.  Ad-free
    2.  API Testing
    3.  REST Client
    4.  Software Testing Tool
    5.  Database Testing
    6.  HTTP Testing
    API Test Base iconPostman Icon

    API Test Base VS Postman

    Is API Test Base a good alternative to Postman?
     
  5. HttpMaster icon
     7 likes

    Practical and easy-to-use software tool for testing HTTP applications and services.

    53 HttpMaster alternatives
    Main window

    License model

    • FreemiumProprietary

    Application types

    Platforms

    • Windows

    Properties

    1.  Lightweight

    Features

    1.  Command line interface
    2.  Request Chaining
    3.  Website testing
    4.  REST API
    HttpMaster iconPostman Icon

    HttpMaster VS Postman

    Is HttpMaster a good alternative to Postman?
     
  6. Nightingale REST Client icon
     4 likes

    A modern, resource-friendly REST client for Windows.

    27 Nightingale REST Client alternatives
    Nightingale REST Client screenshot 1

    License model

    • FreeProprietary

    Application types

    Platforms

    • Windows

    Nightingale REST Client Features

    1.  REST API
    2.  OAUTH
    3.  Tabbed interface
    4.  C-sharp
    5.  REST Client
    Nightingale REST Client iconPostman Icon

    Nightingale REST Client VS Postman

    Is this a good alternative to Postman?
     
    Comments about Nightingale REST Client as an Alternative to Postman
     
    Guest

    Nightingale is super fast and simple to use. It's highly optimized for Windows 10

    Positive commentDec 19, 2018
    1
    Guest

    It's faster, more stable, and the UI is more intuitive.

    Positive commentNov 21, 2020
    0
    Joe Bell

    It's faster than Postman and it uses less resources.

    Positive commentDec 18, 2018
    0
    Postman Icon
    Nightingale REST Client icon
    • Nightingale REST Client is Free and ProprietaryPostman is Freemium and Proprietary
  7. Lama2 icon
     2 likes

    Lama2 defines the human-friendly l2 syntax and CLI for describing and executing APIs. Store your APIs in plain-text files. Collaborate with team using version control (say, git). Run Lama2 directly from VSCode extension. Think of Lama2 as Markdown for APIs.

    56 Lama2 alternatives
    Lama2 screenshot 1

    License model

    • FreeOpen Source

    Application types

    Platforms

    • Mac
    • Windows
    • Linux

    Properties

    1.  Lightweight

    Features

    1.  Command line interface
    2.  Portable
    3.  VSCode
    4.  Plain text file
    5.  Suggests DSL format
    6.  Code generation
    7.  Extensibility
    8.  Request Chaining
    Lama2 iconPostman Icon

    Lama2 VS Postman

    Is Lama2 a good alternative to Postman?
     
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