Altova DiffDog® 2009 is the unique diff / merge utility for files, directories, and database tables.

This powerful, easy-to-use diff merge tool lets you quickly compare and merge text or source code files, synchronize directories, and compare database tables via its straightforward visual interface. Uniquely, it also provides advanced XML-aware differencing and editing capabilities.

Licensing: Per server.

Website: www.microsoft.com