There are dozens. So you are actually talking to a web server node connected to another processor that accepts web-type traffic and IT converts the queries into a form that the main server can understand. Places very little application requirement on the client. Easier to maintain, less that the server has to worry about, like what version of client software they are running. Example is web based email where all the email processing is done on the server and only the screens and data entered at the client is sent back and forth in a formatted textbox.
Client software does MORE of the application processing.
The client must know how to receive, present the mail on the screen to the user, format a response and send it back. The Web, however, was developed in the early 1990s. These applications were originally developed for the Internet, but many organizations are using them on their LANs or for private use on the Internet. CERN's first Web browser was written in 1990, but it was 1991 before it was available on the Internet for other organizations to use. Each client computer needs an applications layer software package called a Web browser.