EcoGene
- Collection of information about the genes, proteins, and intergenic regions of the escherichia coli k-12 genome and proteome. Features an alphabetical index of the individual genes.
- http://ecogene.org

The E. coli Index
- Guide to information relating to the model organism. Incorporates databases, pictures, publications, societies, and teaching resources.
- http://ecoli.bham.ac.uk/

coliBASE
- Relational database that includes all completed E.coli, Shigella and Salmonella genomes, and allows you to search for genes, visualise flanking regions and view alignments of the same region in different genomes.
- http://colibase.bham.ac.uk/

EcoCyc: Encyclopedia of E. coli Genes and Metabolism
- Collaborative project aimed at compiling a knowledge base describing the genes and intermediary metabolism of this bacterium . Features publications and a table of enzymes.
- http://www.ecocyc.org/

GenoBase
- Searchable database devoted to the biology of Escherichia coli K-12 (W3110). Includes publications, tools, and related links.
- http://ecoli.aist-nara.ac.jp/

Colibri
- Database dedicated to the analysis of the genome of Escherichia coli . Provides a complete dataset of DNA and protein sequences derived from the paradigm strain E.coli K-12, linked to the relevant annotations and functional assignments.
- http://genolist.pasteur.fr/Colibri/

Escherichia coli Database Collection
- Provides information on the entire K12 chromosome . Searchable by a gene, sequence map, tables or keyword.
- http://www.uni-giessen.de/~gx1052/ECDC/ecdc.htm

Bacterial Interspersed Mosaic Elements
- Details of short palindromes repeated on enterobacterial chromosomes. Includes properties of repeats and distributions on the Escherichia coli chromosome.
- http://www.pasteur.fr/recherche/unites/pmtg/repet/intro.BIME.html

E. coli Genetic Stock Center
- Maintains a database of genetic information, including genotypes and reference information, gene names, properties, linkage map, and information on specific mutations.
- http://cgsc.biology.yale.edu/top.html