COCONUT (COlleCtion of Open Natural ProdUcTs) Online is an open source project for Natural Products (NPs) storage, search and analysis. It gathers data from over 50 open NP resources and is available free of charge and without any restriction. Each entry corresponds to a "flat" NP structure, and is associated, when available, to their known stereochemical forms, literature, organisms that produce them, natural geographical presence and diverse pre-computed molecular properties.