Gatling.io is described as 'Gatling is an open-source load testing framework based on Scala, Akka and Netty' and is an app. There are more than 25 alternatives to Gatling.io for a variety of platforms, including Windows, Linux, Web-based, Mac and SaaS apps. The best Gatling.io alternative is Apache JMeter, which is both free and Open Source. Other great apps like Gatling.io are locust, k6, wrk and Guardius.
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.
Guardius is a Software as a Service (SaaS) company designed to streamline and automate various IT needs for companies that operate their own websites or manage their own infrastructure. It is crucial for companies to safeguard their websites and infrastructure against potential...
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.
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.
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.
Tsung (formerly IDX-Tsunami) is a distributed load testing tool. It is protocol-independent and can currently be used to stress HTTP, WebDAV, SOAP, PostgreSQL, MySQL, LDAP and Jabber/XMPP servers. It is distributed under the GNU General Public License version 2.
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.
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Easy, Customizable, Scalable, Cloud ready, lot of resources, support and blogs available. Easier to customize than Gatling as it can be done with groovy vs Scala for Gatling.