Archive of European Integration (AEI)  The AEI is an electronic repository and archive for research materials on the topic of European integration and unification.

eGovernment Part of the EU's eEurope program, this site links to eGovernment Research and Development, Milestones and Targets. 

EuroInternet Information Resources Related to European Integration in the Internet. Links to many sources of information, including writings and speeches, research institutes, data, and eurosceptics.

Europa  This is the official web site of the European Union (EU).  It serves as an umbrella for access to other bodies of the EU. Also found here are press releases, calendars, Euro information, access by subject to legal instruments in force, legislative activity in progress, implementation of common policies, EU grants and loans, statistics and publications. Check out the key issues section. Trade issues are found in many sections of the site and a search for them is advisable.

• Agencies 
• Committee of the Regions
• Court of Auditors
• Court of Justice
• Economic and Social Committee
• EU Business
• EUR-Lex  Access to the Official Journal, treaties, legislation, community preparatory acts and a searchable case-law database.
• Eurobarometer  Public opinion surveys conducted on behalf of the EC to monitor social and political attitudes of the EU population.
• European Central Bank
• European Commission
• European Investment Bank
• European Parliament
• Statistical Office of the European Communities (EUROSTAT)
• Week in Europe  From the EC offices in the UK, this report summarizes news events and developments in the EU.  Background briefings also available.

European Commission Libraries Catalogue (ECLAS)  This bibliographic reference database includes official publications and documents of most intergovernmental organizations, commercial, academic and government presses and other selected periodical articles.  "Contains material on European integration, the political objectives and activities of the Union institutions and material on Member States of the EU, in particular their institutional, legal and socioeconomic structures or technical material necessary to the work of the various Commission departments, ranging from legal documentation to scientific and technical research papers."  Actual documents may be retrieved at the European Documentation Centre.

European Integration Papers Online The first peer reviewed online working paper series in the field of European integration.  All papers are also included in the online database of the European Commission's Library (ECLAS). 

European Research Papers Archive  A compilation of EU working papers centralized into a searchable database.

European Union in the U.S.  A site maintained by the EU Delegation of the European Commission to the United States. It includes the latest news from the EU, access to publications and links as well as comprehensive information on EU policy and legislation organized by topic. Also useful are its links to Euro sites.

European Union Internet Resources  Housed at the University of California at Berkeley, this extensive site includes listings of EU servers, documents (from bananas to Kosovo), EC official documents and publications, access to Eur-Lex (public access to EU documents, texts and treaties), and EU sites in other countries.  Well organized and easy to navigate.

European Union Studies Association A professional organization for practitioners and students with interest in European integration. The site includes access to publications and databanks. 

Jean Monnet Center at NYU Law School This site includes access to the Jean Monnet Working Paper Series related to European integration. See also their links to EU-related sites.