Thick client applications are the applications that are installed locally on our computers.
unlike the client apps that run on remote servers
thick client apps do not require internet, better processing
Thick client applications are usually applications used in enterprise environments created to serve specific purposes. Such applications include project management systems, customer relationship management systems, inventory management tools, and other productivity software. These applications are usually developed using Java, C++, .NET, or Microsoft Silverlight.
The sandbox is a virtual environment that allows untrusted code, such as code downloaded from the internet, to run safely on a user's system without posing a security risk.