TIMP is Programmable Instant Messaging Platform based on XMPP/Jabber that runs on Windows with Active Directory - LDAP / XMPP/Jabber integration and SSL.Any XMPP/Jabber client can be used (Linux, Java, Mac-OS, Palm, Pocket-PC, Web client, etc).

Akeni Enterprise Instant Messaging IM is an enterprise messaging system that offers strong encryption, along with Active Directory / LDAP integration. Features includes IM chat, conference, file transfer, notification, alerts, optional web client.

MDaemon , Windows-based email server software, contains full mail server functionality and control with a strong emphasis on security to protect your email communication needs. Security features include Greylisting, DKIM, DomainKeys (DK), and SPF.

RelayFax is a powerful email-to-fax and fax-to-email fax server. RelayFax Pro automates the process of sending, receiving and managing your network fax traffic. By integrating into existing email systems, RelayFax provides full faxing capabillities.

MDaemon GroupWare unlocks the collaborative functions of Microsoft Outlook using MDaemon as the mail server platform. Outlook users can share Calendar, Tasks, Contacts, Notes, and Journal folders without the expense or expertise required by Exchange.

BrowserExpress is a Web-based E-mail client with an Address Book. In less than 10 minutes with only three files, BrowserExpress gives all your users web based e-mail from any web browser anywhere. Implements POP3, SMTP, LDAP, and MIME.

VisNetic Mail Server is a high performance mail server with an extensive, highly configurable feature set. This secure mail server is also ideal for use as a gateway mail server, features built-in anti spam, Web mail and an instant messaging server.