'dubot' means 'Dial-Up Bot'. It is a glue between regular nightly PPP
link and pack
of sending and retriving agents. However it doesn't provide those agents, it
only interfaces with them.
VNC Session Manager adds the nessary glue code between VNC's two execution modes that enables xdm based login to disconnected sessions. i.e. it provides a 'Terminal Services' like login for *nix based vnc servers.
Proxy Glue lets users glue together socks5, socks4, connect, http, and cgi proxies into one big field of potential paths, with configuration done right from the browser.