Proceedings of the International Conferences EXA'08 (Exotic Atoms and Related Topics) and LEAP'08 (Low Energy Antiproton Physics) held from September 15th to 19th, 2008 in Vienna and hosted by the Stefan Meyer Institute for Subatomic Physics of the Austrian Academy of Sciences. Now the research in exotic atoms has a remarkable history of more than 50 years. Enormous success in the understanding of fundamental interactions and symmetries resulted from the research on these tiny objects at the femtoscale. This volume contains research papers on recent achievements and future opportunities of this highly interdisciplinary field of atomic, nuclear, and particle physics. The Proceedings are structured according to the conference session topics: exotic atoms, kaon-nucleon