java ig
what coding platform is used to build chess.com

are there any free coding platforms like that?
I mentioned the programming languages used , if you are speaking about platform , they mught be using their IDE'S ofc

as far as I know the actual programming languages, operating systems, cache stack, databases or message bus used, these are not officially mentioned. If Im wrong please post a link to the source.

as far as I know the actual programming languages, operating systems, cache stack, databases or message bus used, these are not officially mentioned. If Im wrong please post a link to the source.
In fact the are mentioned in here: https://www.chess.com/jobs under each opened position they have to work at Chess.com.
what coding platform was used to build chess.com?