Rasa
the six Ws · specification
Maintained by Rasa (RasaHQ), an open-source conversational-AI company.
A framework for contextual chat and voice assistants with intent-based NLU and dialogue management.
Runs self-hosted as a Python library and SDK.
Reach for it when building controllable, on-prem chat and voice assistants.
Mature, intent-based NLU with full control over dialogue logic.
Python, plus optional TensorFlow and spaCy NLU pipelines.
Vendor-backed and dual-licensed; the Rasa Pro tier is paid. Mature project; self-hostable so conversations stay on your infrastructure.
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