Alternativer til iReader extension til Opera med kommerciel licens

• Opera
  Alle platforme Windows Mac Linux Android iPhone Windows Phone Blackberry Apple Watch iPad Android Tablet Kindle Fire Web Self-Hosted Software as a Service (SaaS) Firefox Opera Safari Waterfox Pale Moon Chrome
• Kommerciel licens
  Enhver licens Gratis licens Open Source-licens Kommerciel licens