SQL Delta Cross Platform (SQL DXP) is now available for cross platform compares of SQL Server to MySQL or the reverse.
SQL DXP compares both schema and data and is a great way to transfer a MYSQL web database to in-house SQL Server. Alternatively you might need to push SQL Server data out to your MySQL database.
http://sqldelta.com/index?page=download to download the current version.
SQL DXP is still in beta development and we are continuing to improve the various schema and data translation functions.
There are of course limitations and for example SQL DXP will not convert a SQL Server procedure into something that MYSQL understands unless you are using very standard (read basic) SQL functionality.
We are working on bringing Oracle schema+data compare to the new V6 format and once this is done we will be including SQL DXP for Oracle and MySQL plus DXP Premium which is all three combined.