Does anyone know of a good cross platform VNC client library (the viewer end)?
I'm not terribly picky about language, but I would prefer something with C++ or Python. I would need it to work on Linux, Mac, and Windows.
libvncclient that comes with libvncserver is C and cross-platform: https://github.com/LibVNC/libvncserver
https://code.google.com/p/python-vnc-viewer/ - should be cross-platform.
https://github.com/sibson/vncdotool - contains more enhancements on top of that.
RealVNC has a Java Viewer (Java is cross platform), which is included in the free version, I am unsure about the license, though. Other VNC solutions might have something similar.
Edit: I found that thightvnc.com has a java viewer which seems to be GPL licensed. See: http://www.tightvnc.com/download.html