Exchange Server Substitutes

• CommuniGate Pro

  Note: This is the one we implemented -- with pretty good luck so far. <.p>

  Solaris, Tru64, Linux/LinuxPPC, FreeBSD, BSDi, WindowsNT, UnixWare, MacOS X, AIX, Cobalt, HP/UX, IRIX, AS/400 and Linux for S390

  SMTP, POP, IMAP, and web mail

  Supports Microsoft Outlook through MAPI

  • Official Web Site [stalker.com]

  Free evaluation download is available. It is a fully functional, unlimited version of the CommuniGate Pro server, but adds a one-line banner to all messages it transfers.
  Download [stalker.com]

  • Pricing [stalker.com]

  About $50 per user for a 50-user setup vs. about $70 per user for the same size Microsoft Exchange Server system, including client licenses.

• Samsung Contact

  Linux (Red Hat 7.2), HP-UX 11.11i, Solaris 8, AIX 4.3

  POP3, IMAP4, LDAP and web mail

  Supports Microsoft Outlook through MAPI

  • Official Web Site [samsungcontact.com]

  Free evaluation download is available. Samsung Contact Server is free of charge for up to 5 Users. Simply install the current License key included in the Server README file. This License key requires periodic renewal. Existing users simply install the latest free License key before the expiration date.
  Download [samsungcontact.com]

• Insight Server

  Linux

  POP3, IMAP4 and web mail (special Outlook interface available)

  • Official Web Site [bynari.net]

  Free 30 day, 5 user evaluation download is available.
  Download [bynari.net]

  5 User license: $259.00
  50 User license: $1,199.00
  1000 User license: $18,000.00