Bioperl.org: The Bioperl Project is an international association of developers of open source Perl tools for bioinformatics, genomics and life science research. The Bioperl server provides an online resource for modules, scripts, and web links

EMBOSS: The European Molecular Biology Open Software Suite. An open source project started by the EMBnet community in order to replace proprietary systems like GCG

European Bioinformatics Institute: Portal for research and services in bioinformatics, with databases of nucleic acid and protein sequences, and macromolecular structures - from the EMBL, Hinxton UK

Human Genome Project Education Resources: A resource for introductory information on the Human Genome Project

The National Center for Biotechnology Information: National Library of Medicine / National Institutes of Health. Offers many important databases (PubMed, GenBank, OMIM) and some tools

Transcription Element Search Software (TESS): Very helpful software for locating and displaying transcription factor binding sites within DNA sequences - from the Univ. of Penn

Verbumculus Genetic Sequence Analyzer: An interesting tool to discover and visualize over- or under-represented words in genetic sequences. Requires Java support in browser. Also available as a downloadable program