Bixby - Advanced AI voice assistance for Samsung devices
Magic - Get whatever you want on demand with no hassle, through SMS
vokul - 100% Handsfree Voice Control App for iOS Devices - Siri Alternative
Alfred - Alfred is an award-winning app for macOS which boosts your efficiency with hotkeys, keywords, text expansion and more. Search your Mac and the web, and be more productive with custom actions to control your Mac.
Mycroft.AI - Mycroft is the world’s first open source assistant.
Siri Shortcuts - Siri is an intelligent assistant that offers a faster, easier way to get things done on your Apple devices. Even before you ask.