When I quickly want to write and test code, I often use repl.it, which is an online environment where user input (code) is evaluated. This great tool allows code to be written and evaluated on one screen, where the left-hand side is designated for code input and the right-hand side returns the results of the code. It supports JavaScript, Python, Ruby, Java, and many more programming languages!

This tool saves me a lot of time, since I don’t have to open a text editor or IDE every time I want to write, test, and explore certain code blocks.

repl.it Editor repl.it Editor

repl.it Main Page repl.it Main Page