The EBA is synonymous with an end-user license agreement (also known as the Software License Agreement (SLA) or an end-user agreement to use the license. In general, a CLA is a legally binding agreement between the owner of a product (often software) and the end user – specifically a contract between the licensee of a product and the licensee. The applicability of an AEA depends on several factors, one of which is the court where the case is being tried. Some courts that have considered the validity of The Shrinkwrap Licensing Agreements have invalidated some EULA and have characterized them as liability contracts that are unacceptable and/or unacceptable according to the U.C.C – see z.B. Step-Saver Data Systems, Inc. v. Wyse Technology, Vault Corp. v. Quaid Software Ltd.  Other courts have found that the Shrinkwrap licensing agreement is valid and enforceable: cf. ProCD, Inc.
v. Zeidenberg, Microsoft v. Harmony Computers, v. Novell Network Trade Center, and Ariz. Cartridge Remanufacturers Ass`n v. Lexmark Int`l, Inc. may also have acidic supports. No court has ruled on the validity of EU A in general; Decisions are limited to certain provisions and conditions. Click-Wrap Licensing Agreements cover the formation of website-based contracts (see iLan Systems, Inc. v. Netscout Service Level Corp.). A common example occurs when a user has to accept a website`s licensing terms by clicking “Yes” in a pop-up to access the website`s features.
Bowers.  Many form contracts are only included in digital form and are presented to a user only as a click-through that the user must “accept”.. Since the user may only see the agreement after the purchase of the software, these documents may be liability contracts. Also, in ProCD v. Zeidenberg, the license was declared enforceable because it was necessary for the customer to accept the terms of the agreement by clicking a “I agree” button to install the software. However, in Specht v. Netscape Communications Corp., the licensee was able to download and install the software without having to review the terms of the agreement and accept it favourably, so that the license is considered inevitable, i.e. software companies often enter into specific agreements with large companies and public authorities, which include specially designed support contracts and guarantees. Recently, publishers have begun encrypting their software packages to prevent the user from installing the software without accepting the license agreement or violating the Digital Millennium Copyright Act (DMCA) and foreign counterparts.
[Citation required] Unlike THE EULAs, free software licenses do not function as contractual extensions of existing legislation.