The last few days saw a couple of threads on the dbus mailinglist about topics we KDE users got used to love in DCOP.
For example how to start browsing for interfaces on applications connected to the bus, in D-BUS terminology called introspection, how to know which session busses are currently active for a user and how to work with users session busses from the system bus.
The last two features are known to DCOP commandline client users as
dcop --all-sessions
and