Apache JMeter
Apache JMeter is an open-source, Java-based desktop application designed for performance and load testing of various services, with a primary focus on web applications. It can simulate a heavy load of concurrent users on a server, group of servers, network, or object to test its strength and analyze overall performance under different load types. JMeter supports a wide range of protocols, including HTTP, HTTPS, FTP, and JDBC, and provides a user-friendly GUI for creating and running test plans, as well as generating graphical reports.
Gatling
Gatling is a powerful open-source load-testing tool that uses an asynchronous, high-performance engine. It's designed for developers and testers to assess the performance and scalability of web applications. Gatling scripts are written in Scala, Java, or Kotlin using a clean and expressive Domain-Specific Language (DSL), which makes them easy to read and maintain. It generates dynamic, colorful, and detailed HTML reports at the end of each test run, providing valuable insights into application performance.
k6
k6 is a developer-centric, open-source load-testing tool designed for performance and reliability testing of APIs and websites. Written in Go and using JavaScript for scripting, k6 is an efficient and modern tool that integrates well with CI/CD pipelines. It allows users to define tests with pass/fail thresholds, enabling them to automate performance regression testing. k6 offers a clean and simple way to write test scripts and provides built-in performance metrics.
Locust
Locust is an open-source performance testing tool that lets you define user behavior with Python code. Instead of a GUI, you write your test scenarios as Python scripts. It's highly scalable and designed to be used for distributed load testing by spawning multiple 'locusts' to simulate concurrent users. Locust includes a user-friendly web-based UI for monitoring the test in real-time, showing key metrics like requests per second and response times.
Artillery
Artillery is a modern, powerful, and easy-to-use load testing toolkit for web applications and APIs. It allows for defining complex performance scenarios in simple YAML or JSON files. Artillery supports a wide range of protocols and can be extended with custom JavaScript logic. It is built for a 'load test as code' approach and integrates seamlessly with CI/CD systems, providing real-time console reporting and detailed JSON output.
Load Testing Toolkit
https://github.com/aliesbelik/load-testing-toolkit
Load Testing Toolkit is a curated collection of open-source tools for debugging, benchmarking, and load testing. This GitHub repository serves as a valuable resource for developers and testers looking to discover a variety of tools, from popular frameworks like JMeter and Gatling to more niche, specialized tools for different protocols and use cases. It's a great place to explore new and lesser-known performance testing solutions.