Description: Apache James is an open source Java Apache Mail Enterprise Server. It is a full-featured enterprise mail server that integrates mail, calendaring and contacts with web applications. It is fast, scalable and offers easy administration.
Type: software
Pricing: Free
Description: Zimbra Collaboration Suite is an open source email and collaboration platform. It includes email, contacts, calendar, document management, and other collaboration tools. Zimbra is designed for enterprises and service providers.
Type: software
Pricing: Open Source