avanderbilt said:
Act is mostly user for heavy-duty customer relationship management. If part of your job it to contact people on a regular basis and keep track of that, Act may have some features you'd find useful that Outlook doesn't have. Outlook is enough for most people.
Actually, I would ammend that to say this:
Act is an extremely powerful customer-relationship-management (CRM) solution, probably the best non-server based solution available for people whose job it is to maintain customer contact and keep track of that contact.
HOWEVER...
In my opinion, Act does not replace Outlook... I don't think Act is nearly as good at, for example, maintaining GTD lists. Or calendars and tasks lists. Or handling the day-to-day minutia involved in getting things done. If you need a CRM, Act is a great solution... however, if you need a PIM (Personal Information Manager) Outlook is currently unmatched.
I think of Act as a powerful contact manager merged with a phone log on steroids... I think of Outlook as a powerful list and calendar manager with powerful groupware and messaging functionality built in.
Of course, that's just my opinion... I could be wrong.
--- JRJ