NCSA Mosaic for the X Window System User's Guide

## Servers and Clients

NCSA Mosaic uses a client/server model. Some computers are configured to communicate with other computers and offer services, such as providing documents or search mechanisms. The machines that provide the services and the document files are called servers. A workstation runs client software, such as NCSA Mosaic for the X Window System, that requests services and provides the interface between the server machine and the user. Together the client and server provide information and the way to access that information.

Server software, using the HyperText Transfer Protocol (HTTP), is also available from NCSA. See ``System Configuration and Modification Assistance'' for information.