rasa NLU (Natural Language Understanding) is a tool for intent classification and entity extraction. You can think of rasa NLU as a set of high level APIs for building your own language parser using existing NLP and ML libraries.
rasa NLU is a tool in the NLP / Sentiment Analysis category of a tech stack.
rasa NLU is an open source tool with 5.08K Github Stars and 1.47K Github Forks. Here’s a link to rasa NLU's open source repository on Github
Here’s a list of reasons why companies and developers use rasa NLU.