Best Api Testing Tools

ACCELQ

Unrated

AI codeless test automation platform for web, mobile, API, and desktop applications with business process focus.

ACCELQ

Unrated

AI codeless test automation platform for web, mobile, API, and desktop applications with business process focus.

Apache JMeter

4.2 rating

Apache JMeter is an open-source, 100% Java-based tool designed to load test and measure performance of web applications. It supports diverse testing scenarios including functional testing, API testing, and distributed load testing across multiple protocols.

Aptori

Unrated

Developer-first API security testing platform using semantic AI to autonomously generate business logic tests and uncover application vulnerabilities.

FlowTestAI

Unrated

Open-source API-first development environment for building and visualizing workflows locally.

Insomnia

4.3 rating

AI-native API collaboration platform for testing, debugging, and designing REST, GraphQL, gRPC, and WebSocket endpoints with MCP client support.

Katalon

4.4 rating

Katalon is an AI-powered software quality platform that unifies testing workflows with agentic automation. It enables QA teams to manage test creation, execution, and reporting across web, mobile, API, and desktop applications.

Keploy

Unrated

Automatically generates API tests from recorded traffic to achieve rapid test coverage.

Kusho

Unrated

Visual Studio Code extension that auto-generates API test cases powered by GPT to catch bugs and ensure API reliability within the IDE.

Postman

4.6 rating

Leading API development and testing platform that simplifies building, testing, documenting, and sharing APIs with collaborative workspaces and automation.

ReAPI

Unrated

Visual API development tool with AI documentation generation and ChatGPT integration.

Swagger

4.5 rating

API design, documentation, and testing platform enabling teams to build quality APIs across the full lifecycle with OpenAPI and AsyncAPI support.