SmartDVB - This is a fully functional DVB application which supports DVB-S/T/C and ATSC devices.
Astra by Cesbo - Talk to Alexa anywhere, from your iPhone
Tvheadend - Redmine
Reverb - Use Alexa on your Mac, iPhone and Android
DVB Dream - DVB Dream is DVB player with many nice and unique features (more below), it supports standards...
Amazon Blueprints - Create your own Alexa Skill in minutes