Jovo - 🗣 Build cross-platform apps for Alexa and Google Home
ifttt - IFTTT puts the internet to work for you. Create simple connections between the products you use every day.
Alexa Skill Kit - Effortless Alexa Skill development with AWS Lambda
Mycroft.AI - Mycroft is the world’s first open source assistant.
Voiceflow - Build voice apps in your browser without coding
Google Assistant - Get things done with Google Assistant