Also known as MacVNC.

VNC stands for Virtual Network Computing. It is, in essence, a remote
display system which allows you to view a computing 'desktop'
environment not only on the machine where it is running, but from
anywhere on the Internet and from a wide variety of machine
architectures.

Comparable to [VNCthing][1], good servers to use with this stable
viewer include [VNC Server 3.5.0][2] for Macs and [TightVNC 2.7][3]
for Windows. For smoother framerates, change server's screen polling
cycle to 30ms.

* Also known as AT&T VNC Viewer client (beta2).

Later spun off from AT&T labs and became RealVNC.

Compatibility
Architecture: 68k PPC

System 7.1 or greater (68k or PPC Classic Mac OS)
Requires the Thread Manager and Open Transport (1.1.1 or later;
preferred) or MacTCP.

Compatible with VNC Servers on other platforms (MacOS, Windows, Linux,
etc.)

  [1]: http://macintoshgarden.org/apps/vncthing
  [2]: http://macintoshgarden.org/apps/vnc-server-350
  [3]: http://www.tightvnc.com/download.php