Alternativa Ball3du za Amazon Echo (Alexa Voice Service) s komercijalnom licencom

• Amazon Echo (Alexa Voice Service)
  Sve platforme Windows Mac Linux Android iPhone Windows Phone Blackberry iPad Android Tablet Web Oculus Rift HTC Vive BSD Java Mobile Steam PortableApps.com Facebook Chrome Amazon Echo (Alexa Voice Service) Odnoklassniki
• Komercijalna licenca
  Bilo koja licenca Besplatna licenca Licenca otvorenog koda Komercijalna licenca