k6
k6 Open Source is designed for load testing. Extensible to support other types of testing.
Similar Tools
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.
Built for developers and testers alike, SoapUI is the only open source tool that covers the entire testing spectrum (functional, security, load, mocking).
Locust is an open source performance/load testing tool for HTTP and other protocols. Its developer-friendly approach lets you define your tests in regular Python code. Locust tests can be run from command line or using its web-based UI
Free & OpenSource REST API Testing Tool for all levels in a Test Pyramid
Simple animated GIF screen recorder with an easy to use interface.
Unifying API testing, API Performance testing, API Mocks and UI testing.
Better than a generic video, see YOUR test, live, ready to show you what matters most: quality at scale.
See how Lynqa runs your existing tests as written, captures step-by-step evidence, without code or no-code.
How are teams like yours balancing speed, quality, security, and AI in 2026? Download your copy and get real insights.
BearQ continuously tests your app, reducing test maintenance and uncovering gaps scripted tests can miss.