Alternativas ao Isotoxin para Firefox com licença gratuita

• Firefox
  Todas as plataformas Windows Mac Linux Chrome OS Android iPhone Windows Phone Blackberry Apple Watch Android Wear iPad Android Tablet Kindle Fire Windows S Web Self-Hosted Software as a Service (SaaS) Firefox Opera Safari BSD Windows Mobile Java Mobile Xfce Haiku PortableApps.com FreeBSD F-Droid S60 Chrome PureOS (Purism)
• Licença gratuita
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