An E3 Viewer allows operating applications residing in a server on any computer either with E3 Viewer's executable program (Windows 7 SP1, Windows 8, Windows 8.1, Windows 10, Windows 10 Enterprise LTSB or LTSC, Windows Server 2008 R2 SP1, Windows Server 2012, Windows Server 2012 R2, Windows Server 2016, or Windows Server 2019) or with an Internet browser. In both cases, it is not necessary to install this application in the client machine, because all components (screens, libraries, and ActiveX controls) are automatically downloaded and registered.