Karaoke Nite - Karaoke with friends together on the web or in VR
Voiceflow - Build voice apps in your browser without coding
iSing Karaoke - iSing Karaoke is free to use the Karaoke app that offers free access to hundreds of songs.
API to bot - Convert your API to Alexa skill or Google Home app in 5 mins
Singa - Singa is the best way to sing karaoke on mobile or tablet.
Alexa Skill Kit - Effortless Alexa Skill development with AWS Lambda