Global Legal Monitor - tracking new legal developments from around the world
World Legal Information Institute - 900+ databases from 120 countries, country specific case law, legislation, treaties, law journals, and reports
Web Resources for International Trade - categories include currencies, International Taxation, International Law, Treaties and International Conventions, and Trade Barriers (Federation of International Trade Associations)
International Court Web Sites
Global Courts - country Supreme Courts
World Courts & Case-Law
Law Courts
International Court of Justice - information and full text decisions; see the World Court Digest for views on judgments of the ICJ
Court of Justice of the European Communities - case-law, proceedings and publications
Project on International Courts and Tribunals - ECHR, ICC, ICTY, WTO and more
World Courts - history and decisions of various courts
Permanent Court of Arbitration - official website
The Multilaterals Project archive collection of texts of almost 200 multilateral agreements,(Fletcher School of Law and Diplomacy at Tufts University)
Congress.gov provides the text of treaties from the 90th Congress forward.
U.S. Senate page for Locating Treaties
United Nations Treaty Collection includes Multilateral Treaties Deposited with the Secretary-General and the United Nations Treaty Series.