NUI Command Sender is a free Chrome extension designed for developers working with FiveM NUI integrations. This lightweight tool streamlines the process of testing by allowing users to quickly send NUI commands to a browser window. With its user-friendly popup interface, developers can easily compose JSON payloads and dispatch them to the active tab using the window.postMessage function.

In addition to sending commands, NUI Command Sender also provides functionality for managing saved test requests, making it an invaluable asset for developers who require efficient testing capabilities. The extension's simplicity and focus on essential features ensure that users can perform their tasks without unnecessary complexity, ultimately enhancing productivity in the development process.