MetaDirectory
- PostgresSQL Replicator
- An asynchronous replica engine that provides some data ownership models and many conflict resolution algorithms. [open source, GNU License]
- Bucardo: Postgres replication system
Asynchronous multi-master and master-slave replication system written in Perl [BSD license].
- Command Prompt
Provides a supported, production quality PostgreSQL Replication. Also offers custom programming services, consulting and managed database hosting.
- DBBalancer
Load balancing multithreaded PostgreSQL connection pool that has a replication mode to keep load balanced backend servers in sync. Currently in Alpha.
- PgCluster
A multi master, synchronous replication system based on the PostgreSQL database server. Wiki, frequently asked questions, example setups and downloads.
- Rserv
Installation guide for triggers to provide Master/Slave replication.
- Slony-I Project
A master to multiple slaves replication system supporting cascading and failover [Berkely/BSD].
- Usogres
Real time backup utility.
