ReactOS is an implementation of Windows Server 2003, still in alpha stage, and very interesting.

But it is no threat to Windows. None at all. Especially compared with Linux.

Here’s why. Sponsors.

Linux has big corporate sponsors behind it, starting with IBM and Google, companies which depend on the software, which run it in scaled installations, and make money off it.

React can’t even think of going there. (Unless, say, HP endorsed it, and that’s not going to happen.)

There’s a second reason React is going nowhere.