WhySoSlow Professional offers all the great features of WhySoSlowPro plus those listed below.
Licensed for use in commercial environments
The professional edition of WhySoSlow comes with a license that is not limited to use at home.
No nag screens
The professional edition of WhySoSlow will not prompt you to offer you more features.
All advanced options in WhySoSlow settings that are not accessible with the home edition are fully enabled.
Customers of the professional edition will receive free major and minor updates of the product for a period of at least 3 years.