This is a description of the Common Lisp ecosystem, as of August 2015, from the perspective of a user and contributor. The purpose of this article is both to give an overview of the ecosystem, and to help drive consolidation in each domain. Each application domain has recommendations for consolidating that part of the ecosystem, and pointers for interesting future work. This is a description of the Common Lisp ecosystem, as of August 2015, from the perspective of a user and contributor. The purpose of this article is both to give an overview of the ecosystem, and to help drive consolidation in each domain. Each application domain has recommendations for consolidating that part of the ecosystem, and pointers for interesting future work. Clack , the equivalent of WSGI/Rack has existed since 2009, and is throughly tested and battle-tested. Three we...