Alexa Skill Kit - Effortless Alexa Skill development with AWS Lambda
Sampulator - Make (and record) beats on your keyboard
Voiceflow - Build voice apps in your browser without coding
Splice Beat Maker - Make and share beats in your browser
Jovo - 🗣 Build cross-platform apps for Alexa and Google Home
BlokDust - Join blocks together to build sounds with this web-based music making app.