If you're in the business of creating computer software, you can use an End User Licence Agreement to licence the software to a user rather than selling a physical copy. With an End User Licence Agreement, the user does not "own" a copy of the software. This document helps ensure that you, as the copyright owner, are able to prevent the user from profiting from the re-sale of your software.

An End User License Agreement helps protect your profits. By creating an End User License Agreement rather than a sale, you are able to define the terms and the limits of the use of the copyrighted software. You can establish limited warranty information and disclaimers of liability, which you can include in your license agreement.

Other names for this document: EULA, Software License Agreement