API Fortress Alternatives

    API Fortress is described as 'Automated API testing for the entire lifecycle. No coding, web-based, actually works'. There are more than 10 alternatives to API Fortress for a variety of platforms, including Mac, Windows, Linux, Online / Web-based and SaaS. The best alternative is Postman, which is free. Other great apps like API Fortress are soapUI (Free, Open Source), Thunder Client (Free), APId (Free, Open Source) and Stoplight (Free Personal, Open Source).

    This page was last updated Jul 11, 2021

    1. 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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      • FreeOpen Source
      • Mac
      • Windows
      • Linux
      Eviware, the maker of soapUI, Web Service Testing Leader
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    2. 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.
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      • FreeOpen Source
      • Self-Hosted
      • Software as a Service (SaaS)
      Don’t just check for 200’s, model complex customer flows and monitor their realtime performance from around the world. Get notified the instant something goes wrong.
      • Free PersonalOpen Source
      • Mac
      • Windows
      • Linux
      • Online
      Stoplight is an API Design, Development, and Documentation platform that enables consistency, reusability, and quality, all with an easy, enjoyable developer experience.


      • FreemiumProprietary
      • Mac
      • Windows
      • Linux
      • Online
      Runscope helps you monitor, log and measure API usage to solve API problems fast. Automatically monitor APIs without any coding. Runscope provides complete logging for all of your API traffic. Track down troublesome API calls with powerful search.
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      • FreemiumProprietary
      • Software as a Service (SaaS)
      Bearer is a developer tool that helps engineering teams monitor API requests, track performance, detect anomalies, and fix issues for their critical API usage. The solution monitors all outgoing API requests without proxying traffic.
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    3. A free, online REST API builder that works with CORS. A Postman alternative without the native apps.
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      • FreemiumProprietary
      • Online
      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.
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    4. 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.
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    Showing 10 of 19 alternatives