INTEGRAL/IBIS 7-year All-Sky Hard X-Ray Survey

This paper is the second in a series devoted to the hard X-ray (17-60 keV) whole sky survey performed by the INTEGRAL observatory over seven years. Here we present a catalog of detected sources that includes 521 objects, 449 of which exceed a 5 sigma detection threshold on the time-averaged map of the sky, and 53 were detected in various subsamples of exposures. Among the identified sources with known and suspected nature, 262 are Galactic (101 low-mass X-ray binaries, 94 high-mass X-ray binaries, 37 cataclysmic variables, and 30 of other types) and 221 are extragalactic, including 217 active galactic nuclei (AGNs) and 4 galaxy clusters. The extragalactic (vertical bar b vertical bar > 5 degrees) and Galactic (vertical bar b vertical bar < 5 degrees) persistently detected source samples have high identification completeness (respectively similar to 96% and similar to 93%) and are valuable for population studies.