Rasa

Open-source framework for building advanced chatbots

★★★★☆ Rasa is developer-centric and gives maximum control over conversation logic, data privacy, and customization. Its open-source roots impress those needing full control. But it demands strong engineering investment. The learning curve and maintenance burden are nontrivial. For technical teams, Rasa is powerful. For nontechnical or quick-launch use cases, it may be too heavy a…