Alternativ till Worldwide Cloud Solutions för Self-Hosted med öppen källkodslicens

• Self-Hosted
  Alla plattformar Windows Mac Linux Chrome OS Android iPhone Windows Phone iPad Android Tablet Web Self-Hosted Software as a Service (SaaS) Windows Mobile Microsoft Office Outlook
• Open Source-licens
  Eventuell licens Gratis licens Open Source-licens Kommersiell licens