Auto-IP Publisher - 2.18 

IP publisher that will insert your IP address into an already existing HTML file. This allows the user to create very complex pages with your current IP address in them. Links can be created to allow the viewer to jump directly to the users current location. Includes a REPEAT function, which causes it to emulate network traffic, keeping your connection alive. If you get disconnected for some reason, and are using an application to automatically reconnect you, Auto-IP Publisher will detect your new IP address (while in REPEAT mode ONLY) and write your new address to the HTML page. Also includes the options to send a "goodbye" message when you close the software, automatic startup, update to multiple files, auto-minimize to a tray icon on startup, and can execute other applications.

DynamIP - 3.50 Final Release 

Free multi-functional Internet Utility with that can post your dynamic IP address to web pages, monitor up to 5 POP e-mail accounts, synchronize your PC clock with any NTP server, use IPchat to chat with other DynamIP users and establish point-to-point connections with MS NetMeeting, and fully functional webcam support, use WEBchat to exchange messages with people, who visit your home page, scan user-defined IP addresses for other DynamIP users and web servers. Also supports DIPS - A free service that allows you to host a website from your local machine.