  In the currently debated context of using clusters of galaxies as
cosmological probes, the need for well-defined cluster samples is critical. The
XXL Survey has been specifically designed to provide a well characterised
sample of some 500 X-ray detected clusters suitable for cosmological studies.
The main goal of present article is to make public and describe the properties
of the cluster catalogue in its present state, as well as of associated
catalogues as super-clusters and fossil groups. We release a sample containing
365 clusters in total. We give the details of the follow-up observations and
explain the procedure adopted to validate the cluster spectroscopic redshifts.
Considering the whole XXL cluster sample, we have provided two types of
selection, both complete in a particular sense: one based on flux-morphology
criteria, and an alternative based on the [0.5-2] keV flux within one arcmin of
the cluster centre. We have also provided X-ray temperature measurements for
80$\%$ of the clusters having a flux larger than 9$\times$10$^{-15}$$\rm
\thinspace erg \, s^{-1} \, cm^{-2}$. Our cluster sample extends from z$\sim$0
to z$\sim$1.2, with one cluster at z$\sim$2. Clusters were identified through a
mean number of six spectroscopically confirmed cluster members. Our updated
luminosity function and luminosity-temperature relation are compatible with our
previous determinations based on the 100 brightest clusters, but show smaller
uncertainties. We also present an enlarged list of super-clusters and a sample
of 18 possible fossil groups. This intermediate publication is the last before
the final release of the complete XXL cluster catalogue when the ongoing C2
cluster spectroscopic follow-up is complete. It provides a unique inventory of
medium-mass clusters over a 50~\dd\ area out to z$\sim$1.
