This catalogue records information in e-journals, e-books, databases, and printed material about themes in the field of the international law. Especially, a large part of the print collection of the Peace Palace Library is searchable through this catalogue. This collection consists of books and materials since 1913.

The meta-search engine of National Case Law was created by the Network of the Presidents of the European Supreme Courts. It has been released in April 2007 and allows to simultaneously query several search engines Reproduced and adapted from the original language editions of the Eurovoc Thesaurus (Edition 4.3) European Communities, 2009 Responsibility for the reproduction and adaptation lies entirely with the Network of the Presidents of the Supreme Judicial Courts of the European Union.

The United Nations iLibrary holds more than 3,500 publications in all official languages of the United Nations: English, French, Spanish, Russian, Chinese and Arabic as well as bi-lingual and tri-lingual publications. These publications have been authored by the United Nations departments such as DESA, OHCHR and DPI, and agencies, funds and programs such as UNDP, ECLAC and UNFPA.