orthologene.org
Orthology and OrthologsA Resource for Homology and Genomes. Sorry for the mess, but we're just getting started here. More content to follow. Most genes are shared between many different species. Understanding how genes evolve, and which have equivalent functions, is a major step in understanding both the functions of genes and organisms. OrtholoGene will be a site dedicated to high quality detection of orthologous (equivalent) genes and the tools to use orthology to understand function.
http://www.orthologene.org/