Voice Actions is described as 'Control your phone through speech commands. Meet your Personal Assistant'. There are more than 10 alternatives to Voice Actions for a variety of platforms, including Android, iPhone, Windows, Linux and iPad. The best alternative is Google Assistant, which is free. Other great apps like Voice Actions are Siri Shortcuts (Free), Siri (Free), Hound (Free Personal) and Almond (Free, Open Source).
Siri Shortcuts deliver a quick way to get things done with your apps with just a tap or by asking Siri. The Shortcuts app enables you to create personal shortcuts with multiple steps from your favorite apps.
Presbot is a community of chatbots, an interactive version of Linkedin. Presbot provides the simplest and fastest way to create your personal and professional chatbot. Presbot employs rule based and machine learning algorithms and learns from each interaction with your end users.