Businesses are frequently turning to alternatives to standard desktop computers. Nettops, thin clients, and zero clients, don't have all of the functionality of a standard computer.
Nettops - or mini-PCs are cheaper and use less power than standard PCs. These are specifically designed for web browsing and document processing. They have low processing power.
Thin clients - are low performance computers designed to connect with a remote server.
Zero clients - are incapable of storing data locally. These devices will be configured to work with one protocol to connect to a server, whereas a thin client can connect with multiple protocol.
Web clients - these devices can only be used to access the web, similar to Chromebooks - but they actually do run some applications.