Linux-based small business servers including... Zimbra - The world's most sophisticated web collaboration suite for the enterprise. OpenERP - OpenERP is a comprehensive suite of business applications including Sales, CRM, Project management, Warehouse management, Manufacturing, Financial management and Human Resources just to name a few. Alfresco - Alfresco is the leading open source enterprise content management system. Asterisk - Asterisk powers IP PBX systems, VoIP gateways, conference servers and more. Ubuntu - Reliable, fast and powerful, Ubuntu Server fits into your existing infrastructure seamlessly. That's why so many businesses and schools are using Ubuntu Server every single day.