The Personal License permits a single user to use the software on one computer for one year only.
The Home User License permits a single user to use the software on multiple computers with life time license validity.
The Corporate License entitles an organization (corporation, company, enterprise...) to receive one copy of the software and to install it on multiple machines within one organization at single location.
The Technician License is meant for Data Recovery Companies. It can be used for the purpose of providing services to the customers.