SmartBear SoapUI

It provides a graphical interface for creating, running, and automating functional tests for SOAP, REST, GraphQL, gRPC, Apache Kafka and other protocols. Users can define test cases, add assertions, drive them with data from external sources, and generate reports. The tool also supports basic performance testing, security checks, and service virtualization through mock services.

The software is aimed at developers, QA engineers, and DevOps teams that need to verify API behavior throughout the development lifecycle. Integration points include CI/CD pipelines and collaboration platforms such as Jira, Slack, GitHub, Bitbucket and GitLab, enabling shared test definitions and results across teams.

What distinguishes this offering is its long‑standing adoption as an open‑source solution with multi‑protocol support, built‑in scripting, and the ability to extend tests through custom property transfers and data generation. It runs on macOS and is positioned as a stable, widely used option for API quality assurance.