Alternativa PlanPlusOnlineu za Microsoft Office Outlook s komercialno licenco

• Microsoft Office Outlook
  Vse platforme Windows Mac Linux Android iPhone iPad Web Self-Hosted Software as a Service (SaaS) Windows Mobile Microsoft Office Outlook Chrome Microsoft Office Suite
• Trgovsko dovoljenje
  Vsako dovoljenje Brezplačna licenca Open Source licenca Trgovsko dovoljenje