The Negative Proteome
Database, which allows researchers interactively explore the
differences between the protein content of different species, now
carries C. elegans in addition to fruitfly, yeast, human,
mouse, arabidopsis, dictyostelium and a variety of prokaryotes. The
database is still in beta stage: please report bugs to the database
maintainer.

NemATOL is a public database
dedicated to collecting, archiving and organizing video images and
other morphological information, DNA sequences, alignments, and other
reference materials for the study of the phylogeny and diversity,
taxonomy, systematics, and ecology of nematodes.