The first digital archive dedicated to Polish contemporary music presents digitized library and archival resources of the Polish Composers' Union. A special collection consists of photos by Andrzej Glanda, Jan Hausbrandt, Marek Suchecki and Andrzej Zborski, to which ZKP has purchased the copyrights, which allow to make them available, also to other entities, without significant restrictions.

The Digital Archive provides both scans of manuscripts and digital versions of scores of works by Polish composers, including: compositions that have never been published in professional publishing houses. The collection of recordings includes sound recordings from the "Warsaw Autumn" festival and recordings from other festivals and concerts organized by ZKP. Most of the recordings presented in whole or in part have never been commercially released.

The Digital Archive also includes musicological publications accompanying festivals, concerts and other events organized by ZKP / POLMIC, as well as other articles on contemporary music, including those written by members of the ZKP Musicologists' Section.