LibGuides: Grey Literature: General sources

General grey literature sources

GreySource
GreySource provides examples of grey literature to the average net-user and in so doing profiles organizations responsible for its production and/or processing. GreySource identifies the hyperlink directly embedded in a resource, thus allowing immediate and virtual exposure to grey literature. The web-based resources appear within categories derived from the COSATI (American) and SIGLE (European) Classification Systems, which were adapted by the OpenGrey Repository.
OpenGrey
As of summer 2021 OpenGrey content has been archived and is no longer being updated, but it contains European grey literature.

OAIster (OCLC)
OAIster is a union catalog of millions of records representing open access resources that was built by harvesting from open access collections worldwide using the Open Archives Initiative Protocol for Metadata Harvesting.
United Nations Official Document System
The United Nations Official Document System (ODS) covers all types of official United Nations documentation, beginning in 1993. Older UN documents are added to the system on a daily basis. ODS also provides access to the resolutions of the General Assembly, Security Council, Economic and Social Council and the Trusteeship Council from 1946 onwards.