k6 Open Source is designed for load testing. Extensible to support other types of testing.

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

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

Simplifies performance and load testing so that application delivery teams can take a standardized approach to ensure continuous performance, reliability, and scalability from development to production.

Performance testing with Flood increases customer satisfaction and confidence in your production apps and reduces business risk.

The Complete Continuous Testing Platform Any test. Any device. App quality without limits.