In experiments at GANIL and GSI, we explored the proton drip line to search for new isotopes and to study the decay modes of nuclei close to the drip line. The study of -delayed proton emission of revealed a very nice agreement between theory and experiment. Studies at GSI enabled us to observe the new isotopes , , and , the latter one being the neighbouring isotope of the doubly-magic nucleus . Finally, at GANIL, the fragmentation of showed clear evidence for the new isotopes , , and . In addition, we performed half-life measurements on and nuclei in this mass region.