Amazon Polly - Named for a parrot, Amazon Polly is a text-to-speech (TTS) software that makes your text come to life in a natural, authentic way. The software has many lifelike voices, both male and female, and in a variety of languages.
Mycroft.AI - Mycroft is the world’s first open source assistant.
Snips Voice Platform - The first AI-powered voice assistant with privacy
Rhasspy - Rhasspy transforms voice commands into JSON events that can trigger actions in home automation software.
Voicepods - Convert any text to human-like voice
Google Assistant - Get things done with Google Assistant