real multi-master replication?

hi,
i read about some replication system for postgresql, but - as far as i
know there is none real multi-master replication system for
postgresql.
all i have seen are based on "query replication" with various "hacks"
for specific constructions (like now()).
my question is - is there any (even fully commercial) multi-master
replication system for postgresql that will work with all possible
constructs, triggers, random data and so on?
i mean - i dont want to bother with choosing to 'note' somehow that
'this particular query' has to be replicated somehow.
i'm thinking about working solution that will allow multi-master connections.

anything? anywhere?

depesz