Alternativa MeetAppu za Microsoft Office Outlook sa licencom otvorenog koda

• Microsoft Office Outlook
  Sve platforme Windows Mac Linux Chrome OS Android iPhone Windows Phone iPad Android Tablet Web Self-Hosted Software as a Service (SaaS) jQuery Windows Mobile Slack Microsoft Office Outlook Chrome Google Calendar Google Apps Microsoft Exchange Server Apple Calendar
• Licenca otvorenog koda
  Bilo koja licenca Besplatna licenca Licenca otvorenog koda Komercijalna licenca