http://www.geneontology.org/GO.tools.annotation.shtml
http://www.arabidopsis.org/portals/genAnnotation/genome_annotation_tools/index.jsp
http://www.ncbi.nlm.nih.gov/projects/genome/guide/build.shtml
http://coot.embl.de/Annot/MP/


Are you doing research in bio informatics?