These applets are small programs that run on the user's system. They can add interactive characteristics to a WWW site that go beyond those available with HTML alone. However, like graphics, they can substantially increase the load imposed on the user's system and should therefore be used with caution. Adding pages to a WWW server is easy. It is merely a question of uploading the relevant HTML and graphics files to a directory on the server where they are accessible.
Most educational institutions have servers that are available for use by faculty and students.
You can also develop your own server. Full-featured server software is available for Windows 95 TM , Windows NT TM , Unix and Macintosh systems, both as commercial software and as shareware. Server software for the WWW is relatively simple. The server then sends a copy of the requested file back to the client for display. Additionally, they may include extensive logging capabilities to track use of individual pages.