V-CamShow is a free webcam slideshow and screensaver. There is no limit to the number of webcams you can view and new webcams are added regularly, which can be imported into your list. You can also add your own webcam to the list and increase your viewers.
V-CamShow employs an intelligent algorithm to auto-detect and auto-adjust the refresh rate - this will work for most, though not all, cams. This prevents you from downloading the same image over and over again. It can also detect slow or inactive cams and, depending on your choice, reduce their refresh rate or disable them completely.
You can also set operation times for each cam individually, so you can have different cams enabled at different times of the day - very useful if you are watching cams from different parts of the world.