Here are a list of converters:
Link seems down now, so it's only available via a snapshot at archive.org, last updated 2011.
An alternative method that would work even on windows but is rarely mentioned is: use an ORM class that abstracts specific database differences away for you. e.g. you get these in PHP (RedBean), Python (Django's ORM layer, Storm, SqlAlchemy), Ruby on Rails (ActiveRecord), Cocoa (CoreData) etc.
i.e. you could do this:
- Load data from source database using the ORM class.
- Store data in memory or serialize to disk.
- Store data into destination database using the ORM class.