  Nuclei in the vicinity of the proton dripline and beyond it are a fascinating
realm within the chart of nuclei. In this chapter the main phenomena that
characterize this domain and are not to be found elsewhere are explored. While
moving away from the $\beta$-stability valley towards the proton dripline,
phenomena like very exotic decay modes such as $\beta$-delayed (multi-)
particle emission, and proton-, or two-proton radioactivity are encountered.
Landmark nuclei are here two isotopes with magic proton and neutron numbers,
$^{48}$Ni and $^{100}$Sn. Moreover, proton-rich nuclei ($N < Z$) display other
interesting features, like breaking of isospin symmetry with consequent
asymmetry in the energy spectra between mirror nuclei, the so-called
Thomas-Ehrmann shift, or the phenomenon of proton-halo. Last but not least,
nuclei close to the proton dripline play a very important role in
nucleosynthesis, since they take part in the rapid-proton capture process and
their properties are crucial in defining the flow followed and its termination
close to $^{100}$Sn.
