Echo View is a free Chrome add-on developed by Marin Usalj. This handy tool is designed to help developers pretty print various arrays and hash maps, currently limited to PHP. With Echo View, developers can easily format and visualize complex data structures, making it easier to debug and understand their code.

The add-on provides a simple and accessible interface for developers to input their arrays or hash maps. Once the data is entered, Echo View will display a neatly formatted and color-coded representation of the data. This makes it much easier to analyze the structure and values within the array or hash map, saving developers valuable time and effort.

Echo View is an open-source project, which means developers can contribute to its development by forking it on GitHub. This allows for community collaboration and improvement of the tool over time. Whether you're a seasoned developer or just starting out, Echo View is a useful tool to have in your arsenal for working with arrays and hash maps in PHP.