Perpetual is a one-time purchase of a license that allows end users to use the software for as long as they comply with all terms of the license agreement. Annual maintenance is optional.
Standalone license is for use by a single end user on one machine (desktop computer or laptop). One standalone license is required for each computer that will run Antenna House software. The standalone license cannot be used on a server and cannot be accessed by other computers directly or indirectly connected to the licensed machine.