StudioRack is the that loads those plugins. Without paid plugins, StudioRack can still be useful. You can:
For $9.99/month (often discounted to $5.99 for the first year), you get all Waves plugins, including StudioRack, plus new releases. This is the modern, safe, affordable way. waves studiorack free link download
The official way to download Waves StudioRack is through the Waves Central application: Downloads - Waves Audio StudioRack is the that loads those plugins