Alternativy k GeekInbox pro Web s licencí open source

• Web
  Všechny platformy Windows Mac Linux Chrome OS Android iPhone Android Wear iPad Android Tablet Web Self-Hosted Software as a Service (SaaS) Windows Mobile Java Mobile S60 Android TV Chrome MetaMask OpenPGP
• Licence Open Source
  Jakákoli licence Bezplatná licence Licence Open Source Komerční licence