It is built using coroutines, allowing it to be completely asynchronous while remaining single threaded. it supports rfb protocols 3.3 through 3.8 and the vencrypt authentication extension providing ssl/tls encryption with x509 certificate authentication.

the core library is written in c and a binding for python using pygtk is available. the networking layer supports connections over both ipv4 and ipv6.

this package contains the experimental mozilla plugin.