DeepPavlov - An open source library for deep learning end-to-end dialog systems and chatbots.
Virtual Human Toolkit - A collection of modules, tools, and libraries designed to aid and support researchers and developers with the creation of virtual human conversational characters
ConvLab - A multi-domain end-to-end dialog system platform
Rasa Core - Rasa Core is a well-designed dialogue engine used to create chatbots.
Brainfish - Instant answers for any customer question about your product.
Haystack NLP Framework - Haystack is an open source NLP framework to build applications with Transformer models and LLMs.