Netjetio is a company that provides a browser testing solution allowing developers to test and debug web applications across different environments and devices. By using their platform, developers can ensure compatibility and performance of their applications on various browsers without needing to maintain a complex local setup. The service helps streamline the testing process, making it easier to identify and resolve issues early in the development cycle. Their website, netjet.io, likely contains detailed information about their offerings, features, and how to get started with their service.