Velvet is a de novo genomic assembler specially designed for short read
sequencing technologies, such as Solexa or 454, developed by Daniel Zerbino
and Ewan Birney at the European Bioinformatics Institute (EMBL-EBI).

Citation:

Velvet: algorithms for de novo short read assembly using de Bruijn graphs.
D.R. Zerbino and E. Birney. Genome Research 18: 821-829 (2008)

WWW: http://www.ebi.ac.uk/~zerbino/velvet/