Apps similar to locust include Apache JMeter, which is free and open source. Other options are Low Orbit Ion Cannon, k6, Loadster and Loader.io. Benchmark Tools like locust are a crowded field, with more than 50 alternatives for Windows, Linux, the web, Mac and self-hosting.
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.
United States
LOIC is an open source network stress testing application, written in C#.
Sweden
EU
k6 is an open-source load testing tool. It's used to test the performance of websites, web apps, APIs and micro-services.
SwedenEU
Loadster is a full-featured load testing solution for websites, web apps, and web services. It's built for real web apps and effortlessly handles cookies, user sessions, custom headers, dynamic form data and more.
Loader.io is a simple cloud-based load testing service that allows you to stress test your web-apps & apis with thousands of concurrent connections. Made by the team behind SendGrid.
United States
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.
Russia
OctoPerf is an enterprise-grade performance and load testing platform available as SaaS and on-premise, enabling engineering teams to simulate realistic traffic, identify bottlenecks, and validate application scalability at a lower cost than traditional enterprise tools.
FranceEU
Blitz makes load and performance testing of your web site, API, iPhone and Android and Facebook apps a fun sport.
Managed load testing platform built on k6, integrating performance testing into CI/CD pipelines, supporting frontend and backend scenarios, GUI test builder, browser recorder, and JavaScript scripting. Free tier offers virtual user hours, metrics, logs, traces, and observability.
United States
Gatling is a software designed for load and performance testing of web applications, APIs, and services. The software enables users to simulate user traffic and analyze the behavior and responsiveness of systems under various load conditions.
Automation-friendly framework for Continuous Testing. It makes sense to automate anything you repeat 10+ times. Taurus improves experience of JMeter, Selenium and others.
