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Command Prompt - http://www.commandprompt.com/
Provides a supported, production quality PostgreSQL Replication. Also offers custom programming services, consulting and managed database hosting. |
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Slony-I Project - http://slony.info/
A master to multiple slaves replication system supporting cascading and failover [Berkely/BSD]. |
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Bucardo: Postgres replication system - http://bucardo.org
Asynchronous multi-master and master-slave replication system written in Perl [BSD license]. |
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PostgresSQL Replicator - http://pgreplicator.sourceforge.net/
An asynchronous replica engine that provides some data ownership models and many conflict resolution algorithms. [open source, GNU License] |
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http://usogres.good-day.net/ - http://usogres.good-day.net/
Real time backup utility. |