API Test Base Alternatives

API Test Base is described as 'Free, offline-first tool for testing APIs and their side effects — the records an API writes to a database, the messages it publishes to a queue, the downstream services it calls. Test cases are created with a no-code / low-code UI, and the same tests can be' and is a HTTP Client in the development category. There are more than 25 alternatives to API Test Base for a variety of platforms, including Mac, Windows, Linux, Web-based and Flathub apps. The best API Test Base alternative is Postman, which is free. Other great apps like API Test Base are Insomnia REST Client, Yaak, ApiArk and soapUI.

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Alternatives
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Alternatives list

  1. httpiness icon
     2 likes

    Httpiness is aimed to be a simple, straightforward HTTP client which minimizes time to configure, send, reconfigure and resend requests in order to maximize development efficiency.

    Cost / License

    • Free
    • Open Source (MIT)

    Application type

    Platforms

    • Mac
    • Windows
    Good alternative?
     
  2. Assertible icon
     5 likes

    Assertible is the easiest way to test and monitor your APIs and helps reduce bugs in web apps by providing tools to continuously validate endpoints and responses with a flexible interface to run your tests any time and place.

    Cost / License

    • Freemium
    • Proprietary

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    Good alternative?
     
  3. Restretto icon
     1 like

    Minimal native and free REST API client for Mac.

    Cost / License

    • Free
    • Proprietary

    Application type

    Platforms

    • Mac
    Good alternative?
     
  4. RequesterX icon
     2 likes

    RequesterX is a free desktop HTTP client for API testing and development. Organize requests into nested collections, use environment variables for easy context switching, generate code snippets in 13 languages, and keep everything stored locally — no account required.

    Cost / License

    • Free
    • Proprietary

    Application type

    Platforms

    • Mac
    • Windows
    Good alternative?
     
  5. Routebase icon
     1 like

    Routebase keeps your API's design, docs, mock servers, contract tests and monitoring in one living OpenAPI spec so they can't drift apart.

    Cost / License

    • Freemium
    • Proprietary

    Platforms

    • Online
    • Software as a Service (SaaS)
    Good alternative?
     
  6. Step CI icon
     1 like

    Open-source API Test Automation framework.

    Cost / License

    Platforms

    • Self-Hosted
    Good alternative?
     
  7. Gotcha HTTP Client is a lightweight http client that allows you to make requests and inspect responses.

    Cost / License

    • Paid
    • Proprietary

    Application type

    Platforms

    • Mac
    Good alternative?
     
  8. Examine icon
     2 likes

    Examine is a new, feature-rich and intuitive Web Services testing tool that is deployed as a web application on a server and allows multiple users to login and use the application. It provides centralized SOAP and REST projects and tests management with excellent support for...

    Cost / License

    • Paid
    • Proprietary

    Alerts

    • Discontinued

    Platforms

    • Mac
    • Windows
    • Linux
    Good alternative?
     
  9. ApiClient icon
     Like

    Helps you to test the Rest API with your phone including features like import, edit and export postman collections.With this, you don't need to look for your laptop or PC whenever you need to test and modify your REST APIs. You can work on them anytime, on the go.

    Cost / License

    • Freemium
    • Proprietary

    Application type

    Platforms

    • Android
    Good alternative?
     
  10. Escambo icon
     Like

    Escambo is an HTTP-based APIs test application for GNOME.

    Cost / License

    Platforms

    • Linux
    • Flathub
    • Flatpak
    Good alternative?
     
  11. Lightweight, free and open-source offline REST and GraphQL API client for Visual Studio Code. A privacy-focused client for testing APIs, HTTP requests and web services.

    Cost / License

    • Free
    • Open Source (MIT)

    Application type

    Platforms

    • Cursor
    • Windsurf
    • Visual Studio Code
    Good alternative?
     
  12. Nokori icon
     Like

    Nokori is the all-in-one platform for building, hosting, and growing your SaaS business. From Instant Microservices, Auth-as-a-Service, and Transactional Email, we give tech brands the tools they need to bring ideas to life quickly and easily, while providing seamless...

    Cost / License

    • Free
    • Proprietary

    Application type

    Platforms

    • Online
    Good alternative?
     
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