Based on our record, Api.ai seems to be more popular. It has been mentiond 1 time since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
Also, when I try to find more help in the AutoVoice documentation/help menu under the Advanced Commands section it points me to an outdated dead end: a now "private" YouTube video and the URL https://api.ai which is a dead URL. Source: over 1 year ago
Dialogflow - Conversational UX Platform. (ex API.ai)
Zoom - Equip your team with tools designed to collaborate, connect, and engage with teammates and customers, no matter where you’re located, all in one platform.
Botpress - Open-source platform for developers to build high-quality digital assistants
Telegram - Telegram is a messaging app with a focus on speed and security. It’s superfast, simple and free.
Messenger Platform - Discovery, chat extensions, and richer experiences
WhatsApp - WhatsApp Messenger: More than 1 billion people in over 180 countries use WhatsApp to stay in touch with friends and family, anytime and anywhere.