Compare the Top API Testing Tools as of December 2025

What are API Testing Tools?

API testing software is used to test and validate the functionality, performance, security, and reliability of Application Programming Interfaces (APIs). These tools help ensure that APIs perform as expected under various conditions and meet the required business and technical requirements. Features typically include automated testing, request/response validation, load testing, security testing (e.g., for vulnerabilities and authentication), and performance testing. API testing software often supports integration with continuous integration/continuous deployment (CI/CD) pipelines to facilitate automated testing as part of the software development lifecycle. Compare and read user reviews of the best API Testing tools currently available using the table below. This list is updated regularly.

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    RapidAPI

    RapidAPI

    RapidAPI

    RapidAPI Testing is a functional API testing and monitoring solution that provides an intuitive UX, support for any API type, and integration with the RapidAPI Marketplace and Enterprise Hub. RapidAPI Testing enables users and enterprises to: Ensure API Functionality – Easily create intricate functional tests for deep validation of APIs. Centralize Monitoring – Monitor and manage API tests across multiple geographies. Improve Efficiency – Integrate to the CI/CD pipeline, collaborate across teams, and natively integrate with the RapidAPI Marketplace and Enterprise Hub. RapidAPI Testing enables you to create customizable functional test flows that provide deep validation of REST, SOAP, and GraphQL APIs. An easy-to-use interface offers users three options for test generation, enabling developers and non-developers to create visual, automated, or code-based test generation.
    Starting Price: $59 per user per month
  • 2
    One APIMarketplace

    One APIMarketplace

    DigitalAPICraft

    Publish, consume, collaborate, accelerate your API journey, and enhance developer experience with our enterprise-grade, API platform-agnostic One APIMarketplace. Reduces API sprawl and API complexities through the operationalization of APIs, making them discoverable, consumable, easy to access, easy to collaborate, and more. One APIMarketplace brings down the time to market by effectively increasing the API adoption, through ease of access, API usage, and performance insights to boost the API consumption. Empower developers with intuitive documentation, community engagement, resources, SDKs, and sandboxes to accelerate API adoption. One APIMarketplace streamlines the discovery and usage of your APIs, guaranteeing a smooth and hassle-free experience for developers and businesses alike. Access comprehensive documentation and test APIs in a sandbox before integration. Gain insights into API usage, performance, and user behavior with our analytics dashboard.
    Starting Price: $99 per month
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