United Nations Digital Library provides access to UN-produced materials in digital format. Includes UN documents, UN voting data, speeches and maps.
United Nations Treaty Database - Provides access to the United Nations Treaty Series and multilateral treaties.
Office of the High Commissioner for Human Rights - Sets standards to promote and protect human rights. Looks after monitoring and implementation.
European Court of Human Rights - Site provides access to case law of the court.
US Department of State - Useful site providing the latest version of the annual human rights report with information on every country.
University of Minnesota Human Rights Library - One of the largest collection of more than 60,000 core human rights documents.