Alternativa Mark the meetingu za Google Calendar s komercijalnom licencom

• Google Calendar
  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 Drupal Google Apps Microsoft Exchange Server Apple Calendar
• Komercijalna licenca
  Bilo koja licenca Besplatna licenca Licenca otvorenog koda Komercijalna licenca