In recent years there has been a growing interest towards the integrability of systems which, though not Hamiltonian, retain some link to—or common origin with—Hamiltonian systems. One such field is that of nonholonomic systems. These investigations often rely on—and try to extend— well-understood ideas and techniques from Hamiltonian mechanics. Techniques range from differential geometry—including symplectic and Poisson geometry and Lie group theory—to numerical investigations. The aim of this workshop is to provide a dedicated occasion of encounter and discussion to all researchers which, with different expertise and from different perspectives, are active in these areas.