Starting from its 2.0.0 release, SOCI uses the plug-in architecture for backends - this allows to target various database servers. Currently (3.1.0), the following database servers are supported:
MySQL
ODBC (generic backend)
Oracle
PostgreSQL
SQLite3
SymmetricDS is web-enabled, database independent, data synchronization/replication software. It uses web and database technologies to replicate tables between relational databases in near real time. The software was designed to scale for a large number of databases, work across low-bandwidth connections, and withstand periods of network outage.