Best Free Load Testing Tools

Open Architecture for Building and Running Load Tests. Need to quickly load test a home page, a single URL within your site, or even a mobile API endpoint. We allow you to compose simple tests and then scale them to tens of thousands of users within a few minutes. Apache JMeter, Gatling, Selenium, and WebDriver are more than just open source tools we enable in cloud load testing, they are vibrant communities with deep knowledge and products built on what real users need. Open load tests give you the flexibility of writing load tests in languages and utilities you use every day. You can write custom tests in Python, PHP or Node.js. We provide an open, easy, and cheap way for load testing. We achieve this with an open architecture which provides tuning and control to setting up the cloud load agents.

All-In-One cloud testing platform for load testing and performance testing, website speed testing, website UI testing, mobile applications and API endpoints. Easy upload and run JMeter tests from multiple cloud locations with thousands of users. Inspect real-time performance metrics for your Website and APIs with Apache JMeter from the cloud. Monitor changes over time and get advice on how to reduce page load times. We run your tests from cloud instances at scheduled times and notify you if something goes wrong. Load your websites and web pages in mobile emulators and inspect screenshots to find potential rendering issues, invalid HTML, missing images, wrong CSS. Schedule runs and inspect rendered images on all devices in just seconds. Emulate your site across different screen sizes and resolutions. Generate screenshots of two websites in just seconds and compare the generated screenshots by a threshold to check differences.

Use the most powerful open source load testing tool for load and stress testing. Get your dedicated IPs from all over the world to simulate user load for your load tests when you work with security regulations. Use your automated test scripts developed with Selenium for performance testing. Rather than using just local data centers, generate load from different regions more realistic load tests. Monitor app performance during test runs by amazing reporting features with tabular or graphical data. Shift left and integrate your performance tests into DevOps process with your favorite CI tool. Monitor app infrastructure with APM tools. Performance Testing is a type of software testing which guarantees that the application is performing well under the defined user load. Main purpose of performance testing is not to find bugs but to eliminate performance bottlenecks. It evaluates the quality attributes of the system.

Save about 50 to 70% of your time using OctoPerf instead of Apache JMeter™ for the Thread Groups creation (aka Virtual Users). Scale up to one million users on our Cloud load testing infrastructure. While the majority of legacy tools features are irrelevant for most load testers, we focus on the most important ones, refining and polishing OctoPerf to offer you the best possible user experience. In addition, to be the easiest to use, Octoperf prides itself on contextual documentation, video tutorials, and a live chat. You have all you need to quickly conduct load tests like a pro. There is no vendor lock-in: you can export from OctoPerf to JMeter JMX files. Use auto-correlations rules and frameworks as well as test validation to quickly create virtual users. Start load test agents all around the globe in a matter of minutes. Create custom visualisations, compare results over time and create report templates.

PFLB is an AI-powered load testing platform where you can simulate massive traffic to your websites, and applications. It’s easy to use and super helpful for teams that want to ensure their product is ready to scale. Features: Realistic testing with scenario-based traffic simulation. Importing your production load profile with Google Analytics integration. Easy scripting with an intuitive no-code editor. Executing advanced JMeter scenarios at scale. Resolving bottlenecks with AI-powered performance insights. Discovering load testing results with Grafana dashboards. Protocols: HTTP, HTTPS, gRPC, JDBC, JMS, AMQP, MQTT, Kafka.