Xamarin.Android - Integrated environment for building not only native Android but iOS and Windows apps too.
Voiceflow - Build voice apps in your browser without coding
RAD Studio - RAD Studio 10.2 with Delphi Linux compiler is the fastest way to write, compile, package and deploy cross-platform native software applications. Learn more.
API to bot - Convert your API to Alexa skill or Google Home app in 5 mins
Rider - Rider is a cross-platform .NET IDE based on the IntelliJ platform and ReSharper.
Alexa Skill Kit - Effortless Alexa Skill development with AWS Lambda