GitHub repository: sarvex/lisp-koans
Primary language: Common Lisp
Description: Common Lisp Koans is a language learning exercise in the same vein as the ruby koans, python koans and others.   It is a port of the prior koans with some modifications to highlight lisp-specific features.  Structured as ordered groups of broken unit tests, the project guides the learner progressively through many Common Lisp language features.