Rasa is a new entrant in the area of chatbots. Instead of using a simple decision tree it uses neural networks to map intent and internal state to a response. Rasa integrates with natural language processing solutions such as spaCy; and, unlike other solutions we've featured in the Radar, Rasa is open source software and can be self-hosted, which makes it a viable solution when ownership of data is of concern. Our experiences with using Rasa Stack for an internal application have been positive.