DBConvert Studio - Database migration/ sync software for data conversion and replication.
PostgreSQL - PostgreSQL is a powerful, open source object-relational database system.
ESF Database Migration Toolkit - ESF Database Migration Toolkit enables transfer of data between various database formats without writing any scripts.
MongoDB - MongoDB (from "humongous") is a scalable, high-performance NoSQL database.
Intelligent Converters MSSQL-MySQL Sync - MSSQL-MySQL Sync is a program to synchronize data between MS SQL or Azure SQL and MySQL databases.
Amazon Aurora - MySQL and PostgreSQL-compatible relational database built for the cloud. Performance and availability of commercial-grade databases at 1/10th the cost.