Has anyone ever used this? They have support for Postgres as master or
a slave in a heterogeneous setup.
"Daffodil Replicator is a powerful Open Source data synchronization tool
that allows bi-directional data synchronization between heterogeneous
databases supporting JDBC drivers. Its flexible publish and subscribe
model supports both snapshot and merge replication."
http://www.daffodildb.com/replicator.html