CLIPS is a very neat tool with a very broad range of applications. It is used in medicine as a diagnosis tool: https://pdfs.semanticscholar.org/64c0/672703724b

CLIPS is a very neat tool with a very broad range of applications. It is used in medicine as a diagnosis tool: https://pdfs.semanticscholar.org/64c0/672703724bd32e04b94c10254f478213bf86.pdf https://pdfs.semanticscholar.org/64c0/672703724bd32e04b94c10... http://www.jatit.org/volumes/research-papers/Vol4No10/5Vol4No10.pdf http://www.jatit.org/volumes/research-papers/Vol4No10/5Vol4N... In software security for malware detection and categorization: https://ieeexplore.ieee.org/abstract/document/4724664 https://ieeexplore.ieee.org/abstract/document/4724664 In gaming for driving AI: https://www.youtube.com/watch?v=-S1CkfzEHSU&t=489s https://www.youtube.com/watch?v=-S1CkfzEHSU&t=489s And plenty of other fields. It's a very good solution for complex problems where a large amount of knowledge or expertise is required in order to reach a solution. Its documentation and REPL are excellent for those who want to approach fundamentals of AI by solving concrete problems. It also comes with several language bindings allowing to integrate it with other AI/ML platforms such as tensorflow, numpy etc.. In the past I helped few students which were trying to bring together machine learning models and expert systems to benefit from both worlds.