Open Grey: System for Information on Grey Literature in Europe

Open Grey is an open-access database, providing full-text grey literature (across various fields) for free. The goal of the site is to help communication between various entities (be it individual people or organizations) about grey literature. Grey literature is, for example, conference proceedings or documents produced by government or businesses. These are not usually considered “literature” in the strictest sense, but have been lumped together into “grey literature”. This is the very core of Open Grey. Open Grey originally started in 1980, as the System for Information on Grey Literature (SIGLE). It has evolved ever since, continuously...