Alternatif untuk Isotoxin untuk Firefox dengan lesen sumber terbuka

• Firefox
  Semua platform 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)
• Lesen Open Source
  Mana-mana lesen Lesen percuma Lesen Open Source Lesen komersil