botwick - Build your own SMS-based text bot
Dialogflow - Conversational UX Platform. (ex API.ai)
Bot Store - A marketplace for ready-to-customize chatbot templates.
Octane AI - Octane AI offers tools to create a bot and engage customers and audience via messaging.
Estherbot - Transform your resume into a bot.
Botpress - Open-source platform for developers to build high-quality digital assistants