Alternativen zu Netrepid Hosted Exchange Services für Software as a Service (SaaS) mit Open Source-Lizenz

• Software as a Service (SaaS)
  Alle Plattformen 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
• Open Source Lizenz
  Beliebige Lizen Freie Lizenz Open Source Lizenz Kommerzielle Lizenz