MAMCO’s collection gathers more than 5'000 works (without counting editions and artists’ documents) created between the second half of 20th century and the beginning of the 21st. Half of this collection is put online on the Summer of 2020. New bodies of works will be added regularly, after inventory and reproduction. Three additional collections of the museum are not available online: our Concrete Poetry Fonds (based on the acquisition of Steven Leiber’s collection), the collection of the Editions Claude Givaudan (donation in progress), and the Ecart Archives (newly presented as a resource and research space within the museum). Images, except for those which will be progressively replaced by better ones, are by Julien Gremaud, Ilmari Kalkkinen, and Annik Wetter. The online catalogue of MAMCO’s collection was made possible by the support of Fondation Leenaards, Loterie Romande, and Fondation Lombard Odier.