During installation, SwyxIt! Classic and the new SwyxIt! UI are installed. With the appropriate authorizations, you can switch between SwyxIt! and SwyxIt! Classic in the settings, see 10.1.3 Switch between SwyxIt! and SwyxIt! Classic.
The SwyxIt! will be installed simultaneously with SwyxFax Client. To use SwyxFax Client, you need the option pack "SwyxFax".