I've downloaded and tested some calendar classes

I would like you to comment about known classes available over the Internet
and their vantages and advantages. I am looking specially for classes based on native
VFP components or direct APIs, to minimize future conflicts when installing my software in my clients computers

Any comments will be welcome

For example, I could install somente ocx based calendars and later have problem
registering this ocx automatically. This is what I mean when I say I am looking for native classes

Moises