The world’s first API testing platform that auto-generates unit test cases with dependency mocks from API calls. Using advanced AI, it simplifies test creation, debugging, and evolution, ensuring comprehensive coverage and boosting software quality.

Gatling is a powerful open-source load testing solution that integrates with your development pipeline. It includes a web recorder and colorful reports.

Katalon's AI-augmented platform enables efficient test writing, deeper insights, and enhanced coverage. It achieves faster execution, higher accuracy, and improved test coverage, ensuring high-quality software products.

Free & OpenSource REST API Testing Tool for all levels in a Test Pyramid

Burp or Burp Suite is a set of tools used for penetration testing of web applications. It is developed by a company named Portswigger who make freely available a Web Security Academy which has a range of lessons on penetration testing.

Loader.io is a free load testing service that allows you to stress test your web-apps & apis with thousands of concurrent connections.