Open DBDiff - A database comparison tool for Microsoft SQL Server 2005+ that reports schema differences and...
SQLite Expert - SQLite Expert - A powerful administration tool for your SQLite databases.
DBComparer - Free Compare database tool - DBComparer 3.0 is a professional compare database tool for comparing Microsoft SQL Server 2008 (and 2005) database structure.
SQLite Maestro - SQL Maestro Group vendors powerful database management and web development tools for MySQL, Oracle, SQL Server, DB2, SQL Anywhere, PostgreSQL, SQLite, Firebird and MaxDB.
MssqlMerge - MssqlMerge is an easy to use diff & merge tool for Microsoft SQL Server databases.
SQLiteStudio - SQLiteStudio is a cross-platform SQLite database manager