Marty Developer Tools is a free Chrome extension designed to enhance the developer experience by providing additional features to Chrome's developer tools. With this extension, developers can easily monitor the current state of their stores, track the flow of actions through their application, and even revert to earlier states if needed.

One of the key features of Marty Developer Tools is its ability to display the stores that handled each action. This information allows developers to quickly identify which stores are responsible for specific actions, making it easier to debug and optimize their application's performance. Additionally, the extension provides details about the arguments passed to the stores' action handlers, giving developers deeper insights into the inner workings of their application.

Another useful feature of Marty Developer Tools is its ability to track component re-rendering. Developers can view which components were affected by each action and how many times they were re-rendered as a result. This information is invaluable for identifying potential performance bottlenecks and optimizing the rendering process.

Overall, Marty Developer Tools is a valuable extension for Chrome's developer tools, offering enhanced visibility and control over the application's state and actions. Whether you're a seasoned developer or just starting out, this extension can greatly improve your development workflow by providing valuable insights and tools for debugging and optimizing your application.