Alternativas ao Snips NLU para Android SDK com licença de código aberto

• Android SDK
  Todas as plataformas Windows Mac Linux Android iPhone Web Self-Hosted Software as a Service (SaaS) Python Raspberry Pi Facebook Messenger Amazon Echo (Alexa Voice Service) Android SDK Google Assistant
• Licença Open Source
  Qualquer licença Licença gratuita Licença Open Source Licença comercial