Code testing sites without an editor
Codepen
One of the wonderful and very famous sites on which you display your work and see the work of others as well. It has a lot of beautiful features and you can make a complete project with its own pictures and benefit more than those who work in the field of the Front-End and you can make a template ready to work on it later
jsFiddle
One of the most famous sites like Codepen, it has a lot of great features, it is fast and has a lot of features, and it also has a Boilerplate ready for the most famous frameworks that you want to work on to save time, you have to visit the site
Repl It
One of the most beautiful and wonderful sites that you can work on. It is not only to experience the Code, but you can make complete projects on it and share it with people in more than one language and framework. You can use Python, Html + Css + Js, Nodejs, C++, Ruby, Go and many more Visit the site
PHP Sandbox
One of the intermediate sites to try PHP Code, and you can choose versions from 5 to the seventh version, and it has many features, including detecting errors in the Code, and you can also share the Code with anyone who visits the site
Code Chief IDE
One of the wonderful and simple sites with an experience of Code for more than one programming language such as C++, C, Rust and many more. It has the advantage of opening a file from your device and the feature of supplementing the Code like regular editors Visit the site
IDE One
An excellent site, an argument for trying a lot of programming and scripting languages such as C++, C, C#, PHP and many more. The code can be saved and shared by visiting the site