Provides a supported, production quality PostgreSQL Replication. Also offers custom programming services, consulting and managed database hosting.

A master to multiple slaves replication system supporting cascading and failover [Berkely/BSD].

Asynchronous multi-master and master-slave replication system written in Perl [BSD license].

An asynchronous replica engine that provides some data ownership models and many conflict resolution algorithms. [open source, GNU License]

Real time backup utility.

Load balancing multithreaded PostgreSQL connection pool that has a replication mode to keep load balanced backend servers in sync. Currently in Alpha.

Installation guide for triggers to provide Master/Slave replication.

A multi master, synchronous replication system based on the PostgreSQL database server. Wiki, frequently asked questions, example setups and downloads.