Landingfolio - The best landing page designs for your inspiration.
Tars - TARS enables users to create chatbots that replaces regular old webforms.
Landing Pages in MailChimp - Easy to build, custom landing pages for free
Phonexia Voicebot Suite - Phonexia Voicebot Suite is an all-in-one voicebot-building solution for the rapid, on-premise development of highly sophisticated conversational AI interfaces for contact centers and other automated systems.
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Dialogflow - Conversational UX Platform. (ex API.ai)