Links
CREx: Common interval Rearrangement Explorer
http://pacosy.informatik.uni-leipzig.de/crex/crex/form
tRNAscan-SE: detection of tRNA genes
http://lowelab.ucsc.edu/tRNAscan-SE/
Arwen: tRNA detection in metazoan mitochondrial sequences
http://130.235.46.10/ARWEN/