Dialogflow - Conversational UX Platform. (ex API.ai)
Zenly - Zenly is a GPS tracker to locate your friends in realtime.
Telegram - Telegram is a messaging app with a focus on speed and security. It’s superfast, simple and free.
YouMap - The Human Atlas™
Botpress - Open-source platform for developers to build high-quality digital assistants
Babble - A more personalized social network