This VNC server for Mac OSX is, as far as I know, the only way to go on the Mac for serving VNC. The OSXvnc SourceForge project page has the latest information, links, downloads, and archives. Version 1.61 pegs my processor when I [Start Server]. Also, the RealVNC client can't connect to it. Version 1.5 doesn't peg the processor. I downloaded OSXvnc 1.5 from The OSXvnc SourceForge downloads page, but it was a trick to find.