In 2008 the European FP6 JETSET project ended. JETSET for Jet Simulations Experiments and
Theory was a joint research network of European expert teams on protostellar jets. The present
proceedings are a collection of contributions presenting new results obtained by those groups
since the end of the JETSET program. This is also the occasion to celebrate Kanaris Tsinganos'
important contributions to this network and for his enlightening insight in the subject that
inspired us all. Some of the former JETSET students are now in the academic world and the
subject has never been so alive. So we present here a collection of results of what has been
done in the field of protostellar jets in the past ten years from the theoretical numerical
observational and experimental point of view. We also present new challenges in the field of
protostellar jets and what we should expect from the development of new instruments and new
numerical codes in the near future. We also gather results on the impact of the study of
protostellar jets on other jet studies in particular on relativistic jets. As a matter of fact
it is time for a new network.
