Professional software tool for HTTP testing and debugging

Achieve effortless quality with zero coding, zero maintenance, and the autonomous power of the world's first open-source testing agent.

REST API client library for .NET

RapidAPI for Mac is a full-featured HTTP client that lets you test and describe the APIs you build or consume. It has a beautiful native macOS interface to compose requests, inspect server responses, generate client code and export API definitions.

The Apache JMeter™ application is open source software, a 100% pure Java application designed to load test functional behavior and measure performance. It was originally designed for testing Web Applications but has since expanded to other test functions.

Selenium automates browsers. That's it! What you do with that power is entirely up to you.