In the proprietary software industry, an end-user license agreement or software license agreement is the contract between the licensor and purchaser, establishing the purchaser's right to use the software.
Wiki:
EULA stands for End User License Agreement or software license agreement is a contract between the licensor and purchaser, establishing the purchaser's right to use the software.
The license may define ways under which the copy can be used. Many form contracts are only contained in digital form, and only presented to a user as a click-through where the user must accept the agreement.
Free license:
Unlike EULA, free software licenses do not work as contract to existing legislation. No agreement between parties is ever held, because a copyright license is simply a declaration of permissions on something that otherwise would be disallowed by default under copyright law.
A free software license, also known as open source license, grants users of that software the rights to use for any purpose, modify and redistribute creative works and software, both of which are forbidden by the defaults of copyright, and generally not granted with proprietary software.
Usage:
The tag eula can be used for programming problems related to license agreement process, for basic and theoretical usage problems of tag eula you can ask these questions on https://www.superuser.com.
