[Plugin: Customer Area] Any other plugins like this?

Hi

I am after a plugin that will allow my clients to have their own private page that they log into to receive documents I have put there for them.

If it can send them an email automatically telling them that new documents are there waiting for them that would be great, but not a deal breaker.

I have found : Customer Area and was wondering if anyone knew of any other plugins that do this and are worth looking at?

Cheers