Compare the Top API Testing Tools for Cloud as of July 2025

What are API Testing Tools for Cloud?

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 for Cloud currently available using the table below. This list is updated regularly.

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    KrakenD

    KrakenD

    KrakenD

    KrakenD is a high-performance API Gateway optimized for resource efficiency, capable of managing 70,000 requests per second on a single instance. The stateless architecture allows for straightforward, linear scalability, eliminating the need for complex coordination or database maintenance. It supports various protocols and API specifications, with features like fine-grained access controls, data transformation, and caching. Unique to KrakenD is its ability to aggregate multiple API responses into one, streamlining client-side operations. Security-wise, KrakenD aligns with OWASP standards and doesn't store data, making compliance simpler. It offers a declarative configuration and integrates with third-party logging and metrics tools. With transparent pricing and an open-source option, KrakenD is a comprehensive API Gateway solution for organizations prioritizing performance and scalability.
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  • 2
    Ambassador

    Ambassador

    Ambassador Labs

    Ambassador Edge Stack is a Kubernetes-native API Gateway that delivers the scalability, security, and simplicity for some of the world's largest Kubernetes installations. Edge Stack makes securing microservices easy with a comprehensive set of security functionality, including automatic TLS, authentication, rate limiting, WAF integration, and fine-grained access control. The API Gateway contains a modern Kubernetes ingress controller that supports a broad range of protocols including gRPC and gRPC-Web, supports TLS termination, and provides traffic management controls for resource availability. Why use Ambassador Edge Stack API Gateway? - Accelerate Scalability: Manage high traffic volumes and distribute incoming requests across multiple backend services, ensuring reliable application performance. - Enhanced Security: Protect your APIs from unauthorized access and malicious attacks with robust security features. - Improve Productivity & Developer Experience
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    Apigee

    Apigee

    Google

    The Cross-Cloud API Management Platform. Build and deliver modern applications faster with well-managed APIs. Quickly deliver mobile apps to be where your customers are. Build a bridge between legacy systems and modern applications. Easily deliver partner and third-party offerings to customers through APIs. Hide clunky UIs and processes behind a clean API facade. Create a unified customer experience for your brand by unlocking siloed systems. Gain full visibility into API traffic, developer behavior, and other systems operations. Measure KPIs and generate actionable intelligence to inform business decisions. Leverage machine learning to identify anomalies and apply corrective actions. API management tools provide businesses with critical knowledge about API traffic trends, top developers, and API response times. This enables them to attract developers, improve API performance, find issues, and make better business decisions.
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