The
RPC Tooltalk database server daemon.
An RPC daemon to provide the Tooltalk desktop integration facilities that are part of OpenWindows and CDE. Enabled - in inetd.conf - on Solaris by default; disabled by some Solaris sysadmins due to stability and security issues.
Few other Unix variants, if any, have this daemon, and you won't miss much by disabling it on Solaris.