Dialogflow - Conversational UX Platform. (ex API.ai)
HubSpot Marketing Hub - HubSpot is a cloud-based inbound marketing software that allows businesses to transform the way that they market online.
Botpress - Open-source platform for developers to build high-quality digital assistants
ShortStack - Shortstack is a website that allows you to create viral online events for your social media followers or other online audience.
Messenger Platform - Discovery, chat extensions, and richer experiences
Woobox - Woobox helps you easily create powerful contests, sweepstakes, coupons, and more to grow your fans...