What is "ideone"

IDEONE is an online IDE that supports a plethora of languages and its versions having as main supported languages: C, C++, PHP, Python, Java and C#; Provides Highlight syntax, identification of (syntactic) errors, allows data entry by the user and also output, allows you to keep your public codes or you can send the URL of a certain code to another person or forum that it will have full access to it can borrow it and make Forks of it.