The best open source alternative to Loadium is Apache JMeter. If that doesn't suit you, our users have ranked more than 25 alternatives to Loadium and ten of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to Loadium are k6, locust, Low Orbit Ion Cannon and YandexTank.
Apache JMeter is an open source Java application, designed to load test functional behavior and measure performance. Originally designed for testing Web Applications, it has since expanded to other test functions as well.
An open source load testing tool written in Python. Locust allows you to define user behaviour with Python code, and swarm your system with millions of simultaneous users.
LOIC is an open source network stress testing application, written in C#.
YandexTank is an extensible open source load testing tool for advanced linux users which is especially good as a part of an automated load testing suite.
The Grinder is a Java load testing framework that makes it easy to run a distributed test using many load injector machines. It is freely available under a BSD-style open-source license.
step is a comprehensive test automation stack designed to achieve high efficiency in testing pipelines. It is well suited for DevOps delivery. It ships with a distributed execution platform, a collaborative test management system and many plugins.
Kraken is a load testing IDE. Kraken provides a complete development environment to software programmers and load testers that seek to make the most out of Gatling.
Pylot is a free open source tool for testing performance and scalability of web services. It runs HTTP load tests, which are useful for capacity planning, benchmarking, analysis, and system tuning.
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