AstraSync is a nice way to synchronize BlackBerries with Exchange:

• Synchronizes email, calendar, contact information.
• Synchronizes over the air using Microsoft’s ActiveSync protocol.
• No need for the additional cost and complexity of BES servers.
• No need for the RIM BlackBerry Desktop Manager.
• Consumers synching with a POP/IMAP mailbox don’t need the BlackBerry Internet Service.
• In addition to Exchange Server, works with MailSite Fusion, CommuniGate Pro, Zimbra, Scalix, FirstClass, and Kerio MailServer.
• No Outlook plugins required.
• Software download to BlackBerry required.
• $49/user/year; volume discounts apply.

… David Ferris