Alternativas ao Folkd para Kindle Fire com licença gratuita

• Kindle Fire
  Todas as plataformas Windows Mac Linux Chrome OS Android iPhone Windows Phone Blackberry Android Wear iPad Android Tablet Kindle Fire Windows S PlayBook Web Self-Hosted Software as a Service (SaaS) Firefox Opera Safari Internet Explorer Vivaldi Browser Xbox Playstation BSD Java Mobile Apple TV Chrome Yandex.Browser Cloudron Microsoft Azure Ruby on Rails Bootstrap
• Licença gratuita
  Qualquer licença Licença gratuita Licença Open Source Licença comercial