Alternativy k Netrepid Hosted Exchange Services pro Software as a Service (SaaS) s bezplatnou licencí

• Software as a Service (SaaS)
  Všechny platformy Windows Mac Linux Android iPhone iPad Android Tablet Web Self-Hosted Software as a Service (SaaS) BSD Microsoft Office Outlook Thunderbird VMware vSphere Hypervisor Cloudron OpenPGP VirtualBox
• Bezplatná licence
  Jakákoli licence Bezplatná licence Licence Open Source Komerční licence