Alternativer til NumSync til Kindle Fire med open source-licens

• Kindle Fire
  Alle platforme Windows Mac Linux Chrome OS Android iPhone Windows Phone Blackberry Blackberry 10 iPad Android Tablet Kindle Fire Windows S Web Self-Hosted Software as a Service (SaaS) Firefox PHP JavaScript Windows Mobile Microsoft Office Outlook Raspberry Pi Chrome Cloudron Flowinity Motti.NET (Programming Language)
• Open Source-licens
  Enhver licens Gratis licens Open Source-licens Kommerciel licens