loadUI is a free and open source cross-platform Load Testing solution. With a visual, drag-and-drop interface, it allows you to create, configure and redistribute your Load Tests interactively and in real-time. In a single test environment, loadUI provides complete test coverage and supports all the standard protocols and technologies. And it’s so powerful, it generates scalable, high-volume and real-world load from any number of local and remote computers.
Before loadUI, Load Testing was very static and counter intuitive. You had to first create the tests and then run them to the end before you could update them. With its Real-time Testing technology, loadUI changes all that. Now you can create, configure, and update your tests in real-time – while the tests are running. loadUI applies the same powerful and flexible approach to Distributed Testing, too. You can distribute your Load Tests across any number of loadUI Agents on local or remote machines, allowing you to simulate high volume and real-world load with incredible efficiency. You add and configure Agents with a simple drag-and-drop. And while the distributed tests are running, you can add new TestCases, start/stop/pause them at any time, or react to variations in response times or system behavior.