Firebird RDBMS offers ANSI SQL features & runs on Linux, Windows & several Unix platforms. Features excellent concurrency & performance & powerful stored procedure & trigger language.
More information and downloads at https://firebirdsql.org/, issue tracker is https://github.com/FirebirdSQL/firebird/issues
Simple Python-based PostgreSQL replicator using a master plpython trigger, signals, sequences, and a python client script See http://pgfoundry.org/projects/pyreplica/ for latest news and file releases