React is not open source

Hi,
React is not open source and some company start to migrate to other Framework, but Free Code Camp seems strives with React.

I don’t want to learn React but I need to finish FFC?

Microsoft and facebook same fight…

here: https://www.reddit.com/r/webdev/comments/58g964/react_is_

Any experience with Vue by any chance? I heard nothing but good stuff about it