Strictly speaking, Waves Tune Real-Time is a premium commercial plugin. However, there are three legitimate ways you can get it or use it for free:
This is the closest you will get to Waves Tune Realtime for free. waves tune realtime free download free
Waves is famous for their sales. Often during Black Friday or special anniversary events, they offer a "Buy 2 Get 1 Free" or even give away a specific plugin entirely for free if you sign up for their mailing list. Strictly speaking, Waves Tune Real-Time is a premium