Alternativa articleboxu za Google Calendar s komercijalnom licencom

• Google Calendar
  Sve platforme Windows Mac Linux Chrome OS Android iPhone Android Wear iPad Android Tablet Windows S Web Self-Hosted Software as a Service (SaaS) BSD Electron / Atom Shell Chrome Google Calendar
• Komercijalna licenca
  Bilo koja licenca Besplatna licenca Licenca otvorenog koda Komercijalna licenca