Alternativen zu Calendarific für Thunderbird mit kostenloser Lizenz

• Thunderbird
  Alle Plattformen Windows Mac Linux Chrome OS Android iPhone Windows Phone Blackberry Blackberry 10 Apple Watch Android Wear Pebble iPad Android Tablet Kindle Fire Windows S PlayBook Web Self-Hosted Software as a Service (SaaS) SeaMonkey BSD Windows Mobile Java Mobile Haiku AROS Facebook Microsoft Office Outlook S60 Apple TV Chrome MorphOS HP webOS AmigaOS Thunderbird GNOME Squarespace Google Calendar Sunbird WiX.com Sailfish OS Commerscale Amazon Echo (Alexa Voice Service) KDE Weebly
• Freie Lizenz
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