Blue-Mind Alternatives

SOGo

SOGo is groupware server with a focus on scalability and open standards. SOGo provides a rich AJAX-based Web interface and supports multiple native clients through...

Features:

• CalDAV
• CardDAV
• Support for Multiple Users
• Scheduling

Zimbra Collaboration Suite

Zimbra Collaboration is an open, secure collaboration tool for email, calendaring, tasks and more. With the most innovative web application available today, Zimbra...

Features:

• Active Directory integration
• ActiveSync
• Email Server
• Real time collaboration
• Team Collaboration

Microsoft Exchange Server

Intelligent inbox and calendar software that's a part of the Microsoft Office Suite.

Features:

• Email Server
• Real time collaboration

Expanding Communication

Turnkey Solutions for the Enterprise Cloud Installation, Configuration, and Management tools for enterprise email, collaboration, messaging, video conferencing, file...

Features:

• CalDAV
• Cloud based
• Contacts
• Email Server
• Video Conferencing

iMail

Fast, safe, heavy mail solution. Web-client access, LAN or WAN self-hosted server, maintenance-free design. No Windows server and database server required, unlimited...

OBM

OBM is a free messaging and collaboration platform useful for just a couple to many thousands of users with strong support for mobile devices.

Features:

• CalDAV
• Email Server
• Real time collaboration

Sanwhole Exchange

Sanwhole Exchange is a server running iMail, iPress and iStore services. iMail is an enterprise-class email server does Microsoft Exchange and Gmail work. iPress sets...

Xeams

Xeams is a secure and powerful mail server for that includes a powerful spam filtering engine that eliminates up to 99% of junk email right out of the box. The software...

Features:

• Email Server
• SMTP

CrossBox

Real-time email, chat, audio/video calls & conferences, file-sharing, and contacts app with a modern and intuitive UI.

Features:

• Chat
• File sharing
• Live Chat
• Email Server