dbForge Data Compare for MySQL serves for comparing and synchronizing data in MySQL, Percona, and MariaDB databases. The tool gives clear view of differences between data, allows analyzing them, generates synchronization script, and applies changes at a glance. It also allows scheduling regular MySQL data comparisons using command line.
Open DBDiff - A database comparison tool for Microsoft SQL Server 2005+ that reports schema differences and...
DataWeigher - The DataWeigher is the tool to compare and synchronize data.
DBComparer - Free Compare database tool - DBComparer 3.0 is a professional compare database tool for comparing Microsoft SQL Server 2008 (and 2005) database structure.
Redgate SQL Data Compare - Use Redgate SQL Data Compare to compare and synchronize static, lookup, and reference data in your SQL Server database - try it free
MssqlMerge - MssqlMerge is an easy to use diff & merge tool for Microsoft SQL Server databases.
AccdbMerge - AccdbMerge is easy to use diff & merge tool for Microsoft Access *.mdb and *.accdb files.