The client software is the software that the end-user uses to access information on the web
Some examples of client software are:
-Web browsers such as Internet Explorer and Firefox (HTTP) (FTP)
-WS-FTP or SmartFTP (FTP)
-Mail software such as Microsoft Outlook, or Mozilla Thunderbird (POP3) (SMTP)
-Media players such as Real Player (RealAudio), VLC, etc.