GitHub + Slack Integration - Full visibility into your GitHub projects right inside Slack
Alexa Skill Kit - Effortless Alexa Skill development with AWS Lambda
Stack Overflow Documentation - A crowdsourced developer documentation
BotTalk - Create Alexa skills and Google Assistant actions with Markup
ask-stack - Get answers from Stack Overflow directly in the Atom editor
Alexa Skill Builder by Chatamo - Build your own Alexa skills for free (no code required)!