Griddy Home Automation - Automate smart devices based on electricity grid prices
Dialogflow - Conversational UX Platform. (ex API.ai)
MapChat - Simple location-based chat web app
Telegram - Telegram is a messaging app with a focus on speed and security. It’s superfast, simple and free.
Reality Editor - MIT's new app lets you program any object
Botkit - Botkit is an open source developer tool for building chat bots, apps and custom integrations for major messaging platforms.