Pusher Beams - Send push notifications programmatically at scale
ifttt - IFTTT puts the internet to work for you. Create simple connections between the products you use every day.
Snowball Smart Notifications - Get the notifications you want and none of the rest
Mycroft.AI - Mycroft is the world’s first open source assistant.
Pushcut - Smart triggers and notifications that kick off your automation. NEW FEATURE: Turn a dedicated iOS device into your personal Shortcuts and HomeKit automation server! The perfect companion for Shortcuts and HomeKit.
Google Assistant - Get things done with Google Assistant