Dialogflow - Conversational UX Platform. (ex API.ai)
Kids First - Kids Videos and Nursery Rhymes – Kids First is a free kid education app developed and published by USP Studios.
Telegram - Telegram is a messaging app with a focus on speed and security. It’s superfast, simple and free.
ChuChu TV LITE - ChuChu TV LITE Best Nursery Rhymes Videos For Kids is an interesting app to stream more than 1000 videos.
Botkit - Botkit is an open source developer tool for building chat bots, apps and custom integrations for major messaging platforms.
YouTube Kids - YouTube for the youngins on iOS and Android