This is a powerful and dynamic, all-in-one, productivity software solution for small to medium size businesses. The Kuadra ES is designed to improve business communications, enhance productivity and reduce cost. The Kuadra ES provides an stable Web presence, enterprise class e-Mail system with antivirus and spam filtering, private Instant Messaging (IM), Virtural Private Network (VPN) services, Corporate Intranet Portal, Intranet Customer Relationship Management (CRM) system, Web Content Filtering, e-mail proxy with virus and spam protection, Content Management System (CMS), e-Commerce and much more. The Kuadra ES can replace almost any server including Windows NT and Exchange. The Kuadra ES is simple to install, it is easy to use and is very affordable. The Kuadra ES offers great value and is priced thousands below any comparable system. The Kuadra ES is a license free system and compatible with all windows clients and resources.