Post Description

RealVNC is a server and client application for the Virtual Network Computing (VNC) protocol to control another computer's screen remotely. 

Supported:
Windows NT 4, 2000, XP, Server 2003 
Windows Vista, Server 2008
UNIX (Linux, Solaris, HP-UX, AIX)
Mac OSX (x86 and PPC) 
2048-bit RSA Server Authentication 
128-bit AES Session Encryption & Tamper-Proofing
Printing 
One-Port H-T-T-P & VNC 
H-T-T-P Proxy Support 
Dedicated help and support channel 
File Transfer 
Integrated Address Book 
Chat 
Desktop Scaling 
Direct platform-native authentication 
Powerful Deployment Tools (Windows only)