This report is the result of desk research and two reports, D2.1 and D2.2 from WP 2.1 in CESSDA SaW. Task 2.1 of the CESSDA SaW project will create a virtual knowledge-sharing platform (KSP) as a central point of access for the body of knowledge created by CESSDA partners. Task 5.2 will extend the content of the KSP with resources created by other relevant non-CESSDA institutions. This content will be added as external resources accessible via web links. They will be described by a set of metadata fields, harmonized with the metadata schema developed in T2.1, and thus possible to locate in the same way as uploaded resources. This report will help the editorial committee of the KSP to find relevant external content to add to the platform.