Alternativer til Casebox til Microsoft Office Outlook med open source-licens

• Microsoft Office Outlook
  Alle platforme 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 Windows Mobile Xfce Microsoft Office Outlook Raspberry Pi S60 Chrome HP webOS Google Drive Dropbox Cloudron Box.com MobileMe
• Open Source-licens
  Enhver licens Gratis licens Open Source-licens Kommerciel licens