SQL Server Migration Assistant

Microsoft SQL Server Migration Assistant (SSMA) is a toolkit that dramatically cuts the effort, cost, and risk of migrating from databases like Oracle, Access, MySQL and Sybase to SQL Server 2005, SQL Server 2008 or SQL Server 2008 R2 and SQL Azure.

Here are the download links:

SSMA for Oracle v4.2 - migrate from Oracle to SQL Server 2005, SQL Server 2008 or SQL Server 2008 R2

SSMA for Access v4.2 - migrate from Access to SQL Server 2005, SQL Server 2008, SQL Server 2008 R2 and SQL Azure

SSMA for MySQL v1.0 - migrate from MySQL to SQL Server 2005, SQL Server 2008, SQL Server 2008 R2 and SQL Azure

SSMA for Sybase v4.2 - migrate from Sybase ASE to SQL Server 2005, SQL Server 2008 and SQL Server 2008 R2