Apple has an enterprise solution and it can also be done with Android phones, although it is a bit more complicated to manage: How To Use Your Android Phone For Business

Our company currently uses the blackberry enterprise server to sync out blackberry devices and Good for Enterprise for our android and apple products. Is there currently an alternative that works seemlessly with syncing mobile devices to corporate data? I have heard that the new blackberry enterprise server (we are upgrading next month) we be able to support all 3 devices. However, I wanted to get input on what other companies/users are using or would recommend using. Our company still primarly uses blackberry devices (yes old school) because they sync so well with the company contacts/emails/calendar/etc. Is there an alternative to this so that we can move away from blackberry devices, like the rest of the world is doing?