Findings:

• Gopher client
• client (user)
• Mattbox: Mac OS X Chatterbox Client
• Writing a Whois Client
• E2 Mozilla Chatterbox Client
• E2 Link and Logger Client
• Filesharing Clients
• Notelet Nodelet Chatterbox Client
• E2 Flash Chatterbox Client
• clientdev: Registering a client (document)
• Client Version XML Ticker (ticker)
• clientdev: a Vision for a wireless client to the Internet's greatest collaborative database
• client access
• Why thin client interfaces suck
• E2 Client Development (category)
• Attorney client privilege
• don't kill your clients
• The most annoying clients have the most interesting cases
• Client Access Policy
• client state
• edev: js-message: a lag-reducing message client
• Catbox Console Client in Python
• DynDNS client
• Clients (user)
• Catbox - Windows chatter client
• Gif Animation: The Display Client
• Notelet Nodelet Squawkbox Client
• Cliented
• Integrated IRC/Everything Client
• IRC client
• keep it on the client side
• Thin client
• X client
• client
• mutual authentication
• Digest Access Authentication
• Java Authentication and Authorization Service
• Pluggable Authentication Module
• Message Authentication Codes
• User Authentication
• Password Authentication Protocol
• FTP client
• When Clients Attack
• don't live with your clients
• client code
• MUD Client
• DHCP Client Lease
• client empoweree
• web-based irc client
• A Simple Stream Client
• perl chatterbox client module
• Authentication
• Know Your Client Form
• Client Server
• Your e-mail client must be this secure before you may ride the internet
• That icky feeling when a client calls with a downed server and you have no clue how to fix it
• E2 Java Chatterbox Client
• chatterbox client
• ICQ client

If you Log in you could create a "client authentication" node. If you don't already have an account, you can register here.