TigerVNC
Not to be Confused with TightVNC
The proper version of TightVNC,with no bloat and freely open-source for all enviroments (including enterprise enviroments)
it was based on the never released VNC 4 branch of TightVNC on launch
it all started when someone named Peter Åstrand left TightVNC after six years (2003) because they cannot support something's development
Links
Website: tigervnc.org