Web Developer Tools - HTTP Rest Client, Websocket is a free utility tool for developers. It's a great application that allows you to test your REST API responses by sending HTTP/HTTPS requests with custom URL, header, form, and body parameters. Also, you can connect and test your Websocket Servers with various customizations. The app supports all CRUD functions (get, post, put, delete, head, options, trace, patch), and you can customize all of the request parameters.

The program is well-designed, and it's easy to navigate through the different functions. The interface is clean, and the app is responsive, making it a great tool for developers who need to test their APIs quickly and efficiently. With the ability to save all Rest Request and Websocket Server history, you can use them again in the future, saving time and effort.

Currently, the app doesn't have any subcategories, but the planned features include FCM Client, FTP, SSH Client, Cloud data storage, which would make it an even more comprehensive tool for developers. Overall, Web Developer Tools - HTTP Rest Client, Websocket is an excellent tool for developers who want to test their APIs with ease and efficiency.