Edge is the Web browser distributed with the Microsoft Windows operating system. It includes the free-software Chromium base with proprietary additions built on top.
Proprietary: Free (as in freedom, not price) software puts the user in control by allowing you to use the software for any purpose, modify it, and redistribute it. Non-free or proprietary software, on the other hand, witholds one or more of these freedoms, giving the developer of the software unjust power over the users.
Supports Interoperability: Interoperability increases freedom and usefulness by allowing different systems to work together. When a service is hostile to other services interoperating, particularly a communication service, this places users in a walled garden, which limits choice and can make it difficult to switch to or from an alternative.
Contains Anti-Features: An anti-feature is a feature of a program that prioritizes the interests of some party other than the user of the program—often those of the program’s developer. In many cases, the feature actively works against the interests of the user, for example by artificially limiting the functionality of the program or subjecting the user to surveillance.