DataWeigher - The DataWeigher is the tool to compare and synchronize data.
Sens'it 3 - Six sensors, a button so many possibilities
Open DBDiff - A database comparison tool for Microsoft SQL Server 2005+ that reports schema differences and...
FriendlyData - Communicate with databases like a human
Replicator - Easily replicate database table data - even with heterogeneous databases.
mlsql - Infer SQL queries from plain-text questions and table headers.