Skype: As one of the most popular webcam software programs, Skype has numerous benefits. With Skype you can participate in one on one chats, group video conferencing, and free phone calls to other Skype users.
CamFrog: (Includes chat rooms) CamFrog does it all. With CamFrog users can create their own personal chat rooms, select from thousands of other chat rooms, and add special effects to your webcam. Visit the company blog to find out more about the all the features: http://blog.camfrog.com/
PalTalk: (Includes chat rooms) PalTalk has an incredible following. With over 4 million users and 4,000 chat rooms, you will have plenty to talk about. Although they do offer a free version, that particular version only allows participants to talk with a limited number of people at once.
YawCam: Yawcam, short for yet another webcam, is a simple webcam software. Some of the features include, image snapshots, motion detection, and text and image overlays.
Gmail: If you already have a Gmail account, consider using Google Chat. The interface for webcam chats is built right into your email account. Talk with family and friends instantly.