Public online sources on European law
Official legislation of the EU can be found in the EUR-Lex database on the Web site of EU-Lex. These are treaties, acts, and judgments of the European Court of Justice and the Court of First Instance. EUR-Lex also contains the Official Journal of the EU, legal proposals, enquiries made in the European Court, and other documents of legal significance, such as green papers and white papers. In addition, these same sources can be found presented differently on various other Web sites of the EU and other institutions of the Union.
General
EUR-Lex: http://eur-lex.europa.eu/en/index.htm
General Report on the Activities of the European Union: http://europa.eu/abc/doc/off/rg/en/welcome.htm
Press room: http://europa.eu/press_room/index_en.htm
Opinions and reports
Official Journal of the EU, C series: http://eur-lex.europa.eu/JOIndex.do?ihmlang=en
European Parliament: http://www.europarl.europa.eu/
European Economic and Social Committee (ESC): http://eesc.europa.eu/index_en.asp
Committee of the Regions (CoR): http://www.cor.europa.eu/
European Council of Ministers: http://ue.eu.int/codec/en/index.htm
Case law
Cases lodged before the EU Court: http://curia.europa.eu/en/content/juris/index.htm
Judgments of the Court of Justice, the Court of First Instance, and the Civil Service Tribunal: http://curia.europa.eu/en/content/juris/index.htm
EUR-Lex: http://eur-lex.europa.eu/en/index.htm
Proposals
COM-documents: http://eur-lex.europa.eu/COMIndex.do?ihmlang=en
Green papers: http://europa.eu/documents/comm/green_papers/index_en.htm
Older green papers on the Web site of the Archive of European Integration-Official European Union Documents (AEI-EU) at the University of Pittsburgh: http://aei.pitt.edu/green_papers.html
White papers: http://europa.eu/documents/comm/white_papers/index_en.htm
Older white papers on the Web site of the Archive of European Integration-Official European Union Documents (AEI-EU) at the University of Pittsburgh: http://aei.pitt.edu/white_papers.html
Official Journal of the EU, C series: http://eur-lex.europa.eu/JOIndex.do?ihmlang=en
Final acts
EUR-Lex: http://eur-lex.europa.eu/en/index.htm
Official Journal of the EU, L series: http://eur-lex.europa.eu/JOIndex.do?ihmlang=en
Legislation in force: http://eur-lex.europa.eu/en/legis/index.htm
Press room: http://europa.eu/press_room/index_en.htm
Consolidated texts
European Parliament (OEIL): http://www.europarl.europa.eu/oeil/
PreLex: http://ec.europa.eu/prelex/apcnet.cfm?CL=en
European Council of Ministers: http://consilium.europa.eu/cms3_fo/showPage.ASP?lang=en
Treaties
The agreements which form the basis of the EU.
On the Web site of the EU: http://europa.eu/abc/treaties/index_en.htm
On the Web site of EUR-Lex: http://eur-lex.europa.eu/en/treaties/index.htm