Open DBDiff - A database comparison tool for Microsoft SQL Server 2005+ that reports schema differences and...
HeidiSQL - HeidiSQL is a powerful and easy client for MySQL, MariaDB, Microsoft SQL Server and PostgreSQL. Open source and entirely free to use.
DataWeigher - The DataWeigher is the tool to compare and synchronize data.
MySQL Workbench - MySQL Workbench is a unified visual tool for database architects, developers, and DBAs.
Red Gate Sql Compare - SQL Compare, by Red Gate Software, compares and synchronizes SQL Server databases, automates...
DBConvert Studio - Database migration/ sync software for data conversion and replication.