This is the World Wide Web server for the Deutsches Elektronen-Synchrotron (DESY) in Hamburg. The laboratory performs basic research in high-energy and particle physics as well as in the production and application of synchrotron radiation. The laboratory has locations in Hamburg and Zeuthen, Germany. Information is provided on User Support Groups, Application Software Group, DESY Library including Electronic preprints, DESY reports, accessions list of last week, conference list, electronic journals, list of journals available in the DESY library, instruction for submitting papers to electronic archives, Collaborations, DESY Software Support, Newsgroups, and more.