CAIcal is a web server that performs several computations in relation to
codon usage and the codon adaptation of DNA or RNA sequences to host
This web server is freely accessible at http://genomes.urv.cat/CAIcal
For more details see the article Puigbo P, Bravo IG and Garcia-Vallve S.
(2008) CAIcal: a combined set of tools to assess codon usage adaptation.
Biology Direct, 3:38.