Alternativer til Bitgur til Kindle Fire med gratis licens

• Kindle Fire
  Alle platforme Windows Mac Linux Chrome OS Android iPhone Windows Phone iPad Android Tablet Kindle Fire Windows S PlayBook Web Self-Hosted Software as a Service (SaaS) JavaScript Windows Mobile Ethereum Gmail Bitcoin JSON
• Gratis licens
  Enhver licens Gratis licens Open Source-licens Kommerciel licens