Open-Xchange offers lifeline to Zimbra users

Open-Xchange Offers Lifeline to Zimbra Users
Companies Concerned with Microsoft/Yahoo Deal Can Switch to Open-Xchange for Discount 

Tarrytown, NY, February 25, 2008 -- Open-Xchange Inc., the market-leading independent open source
alternative to Microsoft Exchange, today announced a special program for Zimbra customers concerns
about their investment in light of the pending Microsoft/Yahoo deal. 

Zimbra customers can fax the Open-Xchange Competitive Upgrade form
(http://www.open-xchange.com/index.php?id=860) to Open-Xchange together with a copy of their last
two years groupware invoice and Open-Xchange will offer a two year subscription to an equivalent
Open-Xchange product for 50% of the cost of their invoice. 

"This is a disturbing time for many Zimbra users," said Rafael Laguna, CEO, Open-Xchange. "Along
with this program, we also introduced our Community Edition earlier this month - to make sure that
any investment in Open-Xchange will be protected." 

Open-Xchange Community Edition offers email, calendar, contacts, tasks and document sharing
providing companies with all the tools needed to facilitate communication and efficient teamwork.
Customers and/or partners can improve communication and teamwork with simple, intuitive tools and
intelligent features, such as smart links between calendar appointments, task lists, contacts,
documents, bookmarks, knowledge articles and AJAX-based mashup capabilities by UWA (Netvibes
Universal Widget API) 

Availability of maintenance, support and Outlook connectivity
Open-Xchange provides additional services for Open-Xchange Community Edition such as maintenance
via an automated updater and connectivity for Microsoft Outlook 2003 and 2007 clients. Open-Xchange
Server Edition starts at US$ 898 / ? 691 and is available today at the Open-Xchange Online Shop
(www.open-xchange.com/shop) and through qualified resellers. Governmental, non-profit
organizations, educational organizations and users of competitive products are eligible for
discounts. All prices exclude VAT. 

About Open-Xchange Inc.
Open-Xchange Inc. is the innovator of scalable and integrated open source email and collaboration
solutions for enterprises, academic institutions, and government authorities. Open-Xchange Hosting
Edition enables web-hosting companies to provide an easy-to-use and feature-rich application
delivered as Software as a Service (SaaS). Internet service providers (ISPs), telcos and hosting
providers, led by 1&1 Internet, deliver advanced email and groupware features through Open-Xchange
Hosting Edition to millions of users. Open-Xchange Inc. is a privately held company headquartered
in Tarrytown, NY, with research, development, and operations in Olpe and Nuremberg, Germany. For
more information, please visit www.open-xchange.com.
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