VNC Viewers
There are a few VNC viewers for Mac OS X, although the two most commonly used are Chicken of the VNC and Vine Viewer. There is also a wide variety of VNC clients available for a wide array of computing platforms, including mobile solutions for PocketPC, Palm, and BlackBerry devices. Although VNC is pretty standardized for basic observation and control, some VNC clients offer additional features when paired with a VNC server from the same developer.
Chicken of the VNC
Chicken of the VNC is probably the most popular Mac OS X VNC viewer. It is an open source VNC viewer and offers a clean and relatively easy to use interface. Chicken of the VNC includes support for Bon Jour, which makes locating computers on a local network segment much easier. Although it doesn’t offer any additional features, Chicken of the VNC is a solid, if basic VNC viewer.
Vine Viewer
Vine Viewer, which is produced by Redstone Software, has a $29.95 price tag, but when used in conjunction with Vine Server, it offers some advanced features, including the ability to transfer clipboard contents between two Macs. It also offers features for taking screenshots and recording actions on the remote computer to a video file. This can be helpful if you are using VNC as an observation solution, such as in a classroom setting or to investigate suspicious activities on a particular computer.