Library of Numerical Abstract Domains for Static Analysis Bertrand Jeannet1 and Antoine Min?e2 1 INRIA Rh^one-Alpes, Grenoble, France, Bertrand.Jeannet@inrialpes.fr 2 CNRS, ?Ecole Normale Sup?erieure, Paris, France, mine@di.ens.fr Abstract. This article describes Apron, a freely available library dedicated to the static analysis of the numerical variables of programs by abstract interpretation. Its goal is threefold: provide analysis implementers with ready-to-use numerical abstractions under a unified API, encourresearch in numerical abstract domains by providing a platform for integration and comparison, and provide teaching and demonstration disseminate knowledge on abstract interpretation.