In Coder v1.23, users can now configure workspace applications, allowing them to add any IDE or desktop application to their remote workspaces through a config file. This feature opens up possibilities for using remote desktops (VNC), launching full-screen desktop applications, and incorporating web-based tools and internal tooling into the Coder dashboard. To configure workspace applications in Coder, users can create an application specs file (config.yaml) containing details such as name, scheme, port, working directory, icon path, command, arguments, and health check information. This new functionality enables developers to customize their remote workspaces according to their specific needs and preferences.