Alternativa NumSyncu za Firefox sa licencom otvorenog koda

• Firefox
  Sve platforme Windows Mac Linux Chrome OS Android iPhone Windows Phone Blackberry Blackberry 10 iPad Android Tablet Kindle Fire Windows S Web Self-Hosted Software as a Service (SaaS) Firefox PHP JavaScript Windows Mobile Microsoft Office Outlook Raspberry Pi Chrome Cloudron Flowinity Motti.NET (Programming Language)
• Licenca otvorenog koda
  Bilo koja licenca Besplatna licenca Licenca otvorenog koda Komercijalna licenca