Alternativy k TubeOffline pro Thunderbird s licencí open source

• Thunderbird
  Všechny platformy Windows Mac Linux Chrome OS Android iPhone iPad Android Tablet Web Self-Hosted Firefox Opera Internet Explorer Vivaldi Browser BSD PortableApps.com Apple TV Pale Moon Chrome Thunderbird Yandex.Browser Vibby Documents
• Licence Open Source
  Jakákoli licence Bezplatná licence Licence Open Source Komerční licence