Chicken of the VNC: SourceForge project to develop a VNC client for Mac OS X. Includes news, downloads, and project information.
ChromiVNC: Remote control for Macintosh.
eSVNC Page: Based on TightVNC, which based on VNC. [GNU GPL]
Fastpush: Freely available Windows script to install WinVnc to NT, 2000 and XP hosts.
Helpdesk VNC: Gives you remote connectivity to any Windows based system even if it is behind a firewall.
Invisionix Systems: This organization develops, distributes, and promotes the Invisionix Systems Remote metasystem. The IRSR uses the principles of Grid Computing to perform its operational tasks by utilizing a virtual 'PC'.
PalmVNC: Remote access and collaboration client for Palm Platform. A Virtual Network Computing client for the palm.
RealVNC: Open-source cross-platform remote control solution.
Redstone Software, Inc. - OSXvnc: Full featured VNC server providing remote access to the GUI, keyboard and mouse using any VNC client.
TightVNC: An Enhanced VNC Distribution: With many new features, improvements, optimizations and bugfixes. [GNU GPL]
Ultr@VNC: Combines features from other projects, like video hook driver, Filetransfer, chat and MS Logon support.