Alternatives à TusFiles pour Microsoft Office Outlook avec licence open source

• Microsoft Office Outlook
  Toutes les plateformes Windows Mac Linux Chrome OS Android iPhone Windows Phone Blackberry Blackberry 10 Apple Watch Android Wear iPad Android Tablet Kindle Fire Windows S Web Self-Hosted Software as a Service (SaaS) Firefox Safari PHP JavaScript Windows Mobile Microsoft Office Outlook Raspberry Pi S60 Chrome Microsoft Edge Chrome Web Store Cloudron Motti.NET (Programming Language)
• Licence Open Source
  Toute licence License gratuite Licence Open Source Licence commerciale